:root {
    --arc-dark: #000411;
    --arc-blue: #0077ff;
    --arc-light: #00ffff;
    --arc-panel: #0a1128;
    --text-main: #e0f2fe;
    --text-dim: #7dd3fc;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    background-color: var(--arc-dark);
    color: var(--text-main);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    overflow-x: hidden;
    position: relative;
}

/* Energy Arc Background */
.arc-bg {
    position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; z-index: -1;
    background: radial-gradient(circle at 50% 0%, var(--arc-blue), transparent 40%);
    opacity: 0.3;
}
.arc-line {
    position: absolute; width: 200%; height: 2px;
    background: linear-gradient(90deg, transparent, var(--arc-light), transparent);
    top: 30%; left: -50%; transform: rotate(15deg); opacity: 0.2;
}

a { text-decoration: none; color: inherit; transition: 0.3s; }

/* Layout: Staggered Masonry feel */
.wrapper { max-width: 1300px; margin: 0 auto; padding: 20px; }

/* Navigation - Floating bottom pill for mobile, top right for desktop */
.nav {
    position: absolute; top: 30px; right: 30px;
    display: flex; gap: 30px; align-items: center; z-index: 50;
}
.nav a { font-size: 14px; font-weight: bold; text-transform: uppercase; color: var(--text-dim); }
.nav a:hover { color: var(--arc-light); text-shadow: 0 0 10px var(--arc-light); }
.nav .btn-arc {
    background: transparent; border: 1px solid var(--arc-light); padding: 10px 25px;
    border-radius: 30px; color: var(--arc-light); box-shadow: 0 0 15px rgba(0,255,255,0.2);
}
.nav .btn-arc:hover { background: var(--arc-light); color: var(--arc-dark); }

/* Brand - Top Left absolute */
.brand {
    position: absolute; top: 30px; left: 30px; z-index: 50;
    font-size: 28px; font-weight: 900; letter-spacing: 2px; color: #fff;
}
.brand span { color: var(--arc-blue); }

/* Main Grid Layout */
.grid-container {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    grid-auto-rows: minmax(100px, auto);
    gap: 20px;
    margin-top: 120px;
    padding-bottom: 50px;
}

.box { background: var(--arc-panel); border: 1px solid rgba(0,119,255,0.3); border-radius: 12px; padding: 30px; position: relative; overflow: hidden;}
.box::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 3px; background: linear-gradient(90deg, var(--arc-blue), var(--arc-light)); }

/* Hero (Takes up significant space) */
.box-hero {
    grid-column: 1 / 9; grid-row: 1 / 4;
    display: flex; flex-direction: column; justify-content: center;
    background: radial-gradient(circle at bottom right, rgba(0,119,255,0.2), var(--arc-panel));
}
.box-hero h1 { font-size: 60px; line-height: 1.1; margin-bottom: 20px; text-shadow: 0 0 20px rgba(0,119,255,0.5); }
.box-hero p { font-size: 18px; color: var(--text-dim); max-width: 80%; margin-bottom: 30px;}
.h-acts { display: flex; gap: 20px; }
.btn-solid { background: var(--arc-blue); padding: 15px 30px; border-radius: 30px; font-weight: bold; }
.btn-solid:hover { background: var(--arc-light); color: var(--arc-dark); }

/* Trust (Small box next to hero) */
.box-trust {
    grid-column: 9 / 13; grid-row: 1 / 2;
    display: flex; flex-direction: column; justify-content: center; gap: 10px;
}
.t-line { font-size: 13px; color: var(--text-dim); border-left: 2px solid var(--arc-light); padding-left: 10px;}

/* Stats (Next to hero) */
.box-stats {
    grid-column: 9 / 13; grid-row: 2 / 4;
    display: grid; grid-template-columns: 1fr 1fr; gap: 20px;
}
.st { text-align: center; display: flex; flex-direction: column; justify-content: center;}
.st b { font-size: 36px; color: #fff; }
.st span { font-size: 11px; color: var(--text-dim); text-transform: uppercase; }

/* Features (Spread out) */
.box-f1 { grid-column: 1 / 5; grid-row: 4 / 6; }
.box-f2 { grid-column: 5 / 9; grid-row: 4 / 6; }
.box-f3 { grid-column: 9 / 13; grid-row: 4 / 6; }
.box h3 { font-size: 20px; color: var(--arc-light); margin-bottom: 15px; }
.box p { font-size: 14px; color: var(--text-dim); }

/* Nodes (Wide row) */
.box-nodes {
    grid-column: 1 / 13; grid-row: 6 / 7;
    display: flex; justify-content: space-around; align-items: center;
}
.n-item { text-align: center; }
.n-item h4 { font-size: 22px; color: #fff; }
.n-item span { font-size: 12px; color: var(--arc-blue); }

/* FAQ & Reviews Split */
.box-faq { grid-column: 1 / 8; grid-row: 7 / 9; }
.box-rev { grid-column: 8 / 13; grid-row: 7 / 9; display: flex; flex-direction: column; gap: 20px;}

.fq-i { border-bottom: 1px solid rgba(0,119,255,0.2); padding: 15px 0;}
.fq-q { font-weight: bold; cursor: pointer; color: var(--arc-light); display: flex; justify-content: space-between;}
.fq-a { font-size: 14px; color: var(--text-dim); padding-top: 10px; display: none; }

.r-i { background: rgba(0,0,0,0.3); padding: 15px; border-radius: 8px; border-left: 2px solid var(--arc-blue); }
.r-i .s { color: var(--arc-light); font-size: 12px; margin-bottom: 5px;}
.r-i p { font-size: 13px; font-style: italic; margin-bottom: 10px;}
.r-i b { font-size: 11px; text-transform: uppercase; color: #fff;}

.footer { text-align: center; font-size: 12px; color: var(--text-dim); padding: 20px 0; border-top: 1px solid rgba(0,119,255,0.2); }

@media (max-width: 900px) {
    .nav { position: static; justify-content: center; background: var(--arc-panel); padding: 15px; width: 100%; border-bottom: 1px solid var(--arc-blue);}
    .brand { position: static; text-align: center; padding: 20px; }
    .grid-container { display: flex; flex-direction: column; margin-top: 20px;}
    .box-hero h1 { font-size: 40px; }
    .box-nodes { flex-wrap: wrap; gap: 20px;}
}