:root {
    --fluid-bg: #001122;
    --fluid-text: #e0f2fe;
    --fluid-primary: #0ea5e9;
    --fluid-secondary: #38bdf8;
    --fluid-accent: #7dd3fc;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    background-color: var(--fluid-bg); color: var(--fluid-text);
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    line-height: 1.7; overflow-x: hidden;
    position: relative;
}
/* Deep Sea Background Effect */
body::before {
    content: ''; position: fixed; top: 0; left: 0; width: 100vw; height: 100vh;
    background: radial-gradient(circle at 50% 150%, rgba(14, 165, 233, 0.15) 0%, transparent 60%),
                radial-gradient(circle at 80% -20%, rgba(56, 189, 248, 0.1) 0%, transparent 50%);
    z-index: -1;
}

.fluid-container { max-width: 1100px; margin: 0 auto; padding: 0 20px;}

/* Header */
.fluid-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 30px 0; margin-bottom: 70px;
}
.fluid-brand {
    font-size: 24px; font-weight: bold; color: #fff;
    text-shadow: 0 0 20px rgba(14, 165, 233, 0.8);
    position: relative;
}
.fluid-brand::after {
    content: ''; position: absolute; bottom: -5px; left: 0; width: 100%; height: 2px;
    background: var(--fluid-primary); box-shadow: 0 0 10px var(--fluid-primary);
}
.fluid-nav { display: flex; gap: 40px; }
.fluid-nav a {
    font-size: 15px; color: #94a3b8; transition: all 0.3s ease;
    position: relative; padding-bottom: 5px;
}
.fluid-nav a:hover, .fluid-nav a.active { color: #fff; }
.fluid-nav a.active::after {
    content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
    width: 20px; height: 3px; background: var(--fluid-secondary); border-radius: 3px;
}

/* Hero */
.fluid-hero {
    text-align: center; margin-bottom: 120px; position: relative;
}
.fh-content { max-width: 800px; margin: 0 auto; position: relative; z-index: 2;}
.fh-content h1 {
    font-size: 56px; font-weight: 300; margin-bottom: 30px; color: #fff;
    line-height: 1.2; letter-spacing: 1px;
}
.fh-content h1 span { font-weight: 700; color: var(--fluid-secondary);}
.fh-content p { font-size: 18px; color: #94a3b8; margin-bottom: 50px; font-weight: 300;}

.fluid-shape {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
    width: 600px; height: 600px; z-index: 1; opacity: 0.3;
    background: linear-gradient(45deg, var(--fluid-primary), transparent);
    border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%;
    animation: morph 15s ease-in-out infinite alternate;
    filter: blur(50px);
}
@keyframes morph {
    0% { border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%; }
    100% { border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%; }
}

.btn-fluid {
    display: inline-block; padding: 18px 45px; font-size: 16px; font-weight: 600;
    color: #001122; background: var(--fluid-secondary); border-radius: 50px;
    transition: all 0.3s; margin: 0 15px; box-shadow: 0 10px 30px rgba(56, 189, 248, 0.3);
}
.btn-fluid:hover { transform: translateY(-3px); box-shadow: 0 15px 40px rgba(56, 189, 248, 0.5); }
.btn-fluid-alt {
    display: inline-block; padding: 18px 45px; font-size: 16px; font-weight: 600;
    color: var(--fluid-text); background: rgba(255,255,255,0.05); border-radius: 50px;
    border: 1px solid rgba(255,255,255,0.1); transition: all 0.3s; margin: 0 15px;
    backdrop-filter: blur(10px);
}
.btn-fluid-alt:hover { background: rgba(255,255,255,0.1); border-color: var(--fluid-secondary); }

/* Stats */
.fluid-stats {
    display: flex; justify-content: center; gap: 80px; margin-bottom: 120px;
}
.fs-item { text-align: center; }
.fs-val { font-size: 48px; font-weight: 200; color: #fff; margin-bottom: 5px;}
.fs-lbl { font-size: 14px; color: var(--fluid-accent); font-weight: 500; letter-spacing: 2px; text-transform: uppercase;}

/* Features */
.fluid-features { margin-bottom: 120px;}
.ff-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px;}
.ff-card {
    background: rgba(14, 165, 233, 0.03); padding: 40px 30px; border-radius: 20px;
    border: 1px solid rgba(14, 165, 233, 0.1); transition: all 0.4s;
    text-align: center;
}
.ff-card:hover {
    background: rgba(14, 165, 233, 0.08); transform: translateY(-10px);
    border-color: rgba(14, 165, 233, 0.3); box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}
.ff-icon {
    width: 60px; height: 60px; margin: 0 auto 25px; border-radius: 50%;
    background: linear-gradient(135deg, var(--fluid-primary), var(--fluid-secondary));
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 10px 20px rgba(14, 165, 233, 0.3);
}
.ff-card h3 { font-size: 20px; font-weight: 600; margin-bottom: 15px; color: #fff;}
.ff-card p { font-size: 15px; color: #94a3b8; line-height: 1.8;}

/* Nodes */
.fluid-nodes {
    margin-bottom: 120px; text-align: center;
    padding: 60px 40px; background: rgba(255,255,255,0.02); border-radius: 30px;
}
.fluid-nodes h2 { font-size: 32px; font-weight: 300; margin-bottom: 40px; color: #fff;}
.fn-list { display: flex; flex-wrap: wrap; gap: 20px; justify-content: center;}
.fn-item {
    padding: 12px 25px; background: rgba(0,0,0,0.3); border-radius: 30px;
    font-size: 15px; color: var(--fluid-text); border: 1px solid rgba(255,255,255,0.05);
    transition: all 0.3s;
}
.fn-item:hover { border-color: var(--fluid-secondary); color: #fff;}

/* FAQ */
.fluid-faq { margin-bottom: 100px; max-width: 800px; margin-left: auto; margin-right: auto;}
.fluid-faq h2 { font-size: 32px; font-weight: 300; margin-bottom: 50px; color: #fff; text-align: center;}
.f-faq-item {
    margin-bottom: 20px; background: rgba(255,255,255,0.02); border-radius: 15px;
    padding: 30px; border: 1px solid rgba(255,255,255,0.05);
}
.f-fq { font-size: 18px; font-weight: 500; color: var(--fluid-secondary); margin-bottom: 15px;}
.f-fa { font-size: 15px; color: #94a3b8; line-height: 1.8;}

footer { text-align: center; padding: 40px 0; border-top: 1px solid rgba(255,255,255,0.05); color: #64748b; font-size: 14px;}

@media (max-width: 900px) {
    .fluid-header { flex-direction: column; gap: 20px; padding: 20px 0;}
    .fh-content h1 { font-size: 40px; }
    .fluid-stats { flex-direction: column; gap: 40px; }
    .ff-grid { grid-template-columns: 1fr; }
    .btn-fluid, .btn-fluid-alt { display: block; margin: 15px auto; width: 80%;}
}