:root {
    --multi-bg: #121212;
    --multi-text: #e0e0e0;
    --multi-primary: #00e5ff; /* Cyan */
    --multi-secondary: #242424;
    --multi-accent: #ff4081; /* Deep Orange/Pink */
    --multi-border: #333333;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    background-color: var(--multi-bg); color: var(--multi-text);
    font-family: 'Open Sans', sans-serif;
    line-height: 1.6; overflow-x: hidden;
}

.multi-container { max-width: 1200px; margin: 0 auto; padding: 0 20px;}

/* Header */
.multi-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 20px 0; margin-bottom: 40px; border-bottom: 1px solid var(--multi-border);
}
.multi-brand {
    font-size: 24px; font-weight: 700; color: var(--multi-primary);
    display: flex; align-items: center; gap: 10px; text-transform: uppercase; letter-spacing: 1px;
}
.multi-brand::before {
    content: ''; display: block; width: 30px; height: 30px;
    background: conic-gradient(var(--multi-primary), var(--multi-accent), var(--multi-primary));
    border-radius: 50%; animation: spin 4s linear infinite;
}
@keyframes spin { 100% { transform: rotate(360deg); } }

.multi-nav { display: flex; gap: 25px; }
.multi-nav a {
    font-size: 14px; font-weight: 600; color: #aaa; text-decoration: none;
    text-transform: uppercase; letter-spacing: 1px; transition: color 0.3s;
}
.multi-nav a:hover, .multi-nav a.active { color: var(--multi-primary); }

/* Hero */
.multi-hero {
    text-align: center; margin-bottom: 80px; padding: 80px 20px;
    background: radial-gradient(circle at center, var(--multi-secondary) 0%, var(--multi-bg) 100%);
    border-radius: 20px; border: 1px solid var(--multi-border);
}
.multi-hero h1 {
    font-size: 48px; color: #fff; margin-bottom: 20px; font-weight: 300;
}
.multi-hero h1 span { color: var(--multi-primary); font-weight: 700;}
.multi-hero p { font-size: 18px; color: #bbb; margin-bottom: 40px; max-width: 700px; margin-left: auto; margin-right: auto;}

.btn-multi {
    display: inline-block; padding: 15px 40px; font-size: 16px; font-weight: 700;
    color: #000; background: var(--multi-primary); border-radius: 30px;
    text-decoration: none; transition: all 0.3s; text-transform: uppercase; letter-spacing: 1px;
}
.btn-multi:hover { background: #fff; box-shadow: 0 0 20px rgba(0, 229, 255, 0.5);}

/* Devices Grid */
.multi-devices {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 80px;
}
.md-card {
    background: var(--multi-secondary); padding: 30px 20px; border-radius: 15px;
    text-align: center; border: 1px solid var(--multi-border); transition: transform 0.3s, border-color 0.3s;
}
.md-card:hover { transform: translateY(-10px); border-color: var(--multi-primary); }
.md-icon { font-size: 40px; margin-bottom: 15px; color: var(--multi-primary);}
.md-card h3 { font-size: 18px; color: #fff; margin-bottom: 10px;}
.md-card p { font-size: 13px; color: #888;}

/* Features */
.multi-features { margin-bottom: 80px; }
.multi-features h2 { font-size: 32px; text-align: center; margin-bottom: 50px; color: #fff; font-weight: 300;}
.mf-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 40px; }
.mf-item {
    display: flex; gap: 20px; align-items: flex-start;
}
.mf-icon {
    width: 50px; height: 50px; background: rgba(0, 229, 255, 0.1); border-radius: 10px;
    display: flex; align-items: center; justify-content: center; color: var(--multi-primary);
    font-size: 24px; flex-shrink: 0; border: 1px solid rgba(0, 229, 255, 0.3);
}
.mf-text h3 { font-size: 20px; color: #fff; margin-bottom: 10px;}
.mf-text p { font-size: 15px; color: #aaa;}

/* FAQ */
.multi-faq { margin-bottom: 100px; }
.multi-faq h2 { font-size: 32px; text-align: center; margin-bottom: 50px; color: #fff; font-weight: 300;}
.m-faq-item {
    background: var(--multi-secondary); padding: 25px; border-radius: 10px;
    margin-bottom: 20px; border-left: 3px solid var(--multi-accent);
}
.m-fq { font-size: 18px; font-weight: 600; color: #fff; margin-bottom: 10px;}
.m-fa { font-size: 15px; color: #bbb;}

footer {
    text-align: center; padding: 30px 0; color: #666; font-size: 14px;
    border-top: 1px solid var(--multi-border);
}

@media (max-width: 900px) {
    .multi-devices { grid-template-columns: repeat(2, 1fr); }
    .mf-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .multi-header { flex-direction: column; gap: 15px; }
    .multi-hero h1 { font-size: 36px; }
}