/* i4 Glass Style (Ethereal/Modern) */
:root {
    --primary-color: #2563eb;
    --text-main: #1e293b;
    --text-sub: #64748b;
    --glass-bg: rgba(255, 255, 255, 0.65);
    --glass-border: rgba(255, 255, 255, 0.5);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.1);
}

body {
    margin: 0;
    font-family: 'Manrope', sans-serif;
    color: var(--text-main);
    overflow-x: hidden;
}

/* Background Mesh */
.mesh-bg {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    z-index: -1;
    background-color: #f0f4f8;
    background-image: 
        radial-gradient(at 0% 0%, hsla(253,16%,7%,1) 0, transparent 50%), 
        radial-gradient(at 50% 0%, hsla(225,39%,30%,1) 0, transparent 50%), 
        radial-gradient(at 100% 0%, hsla(339,49%,30%,1) 0, transparent 50%);
    background: 
        radial-gradient(circle at 15% 50%, rgba(200, 220, 255, 0.8), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(230, 200, 250, 0.8), transparent 25%);
}

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

a { text-decoration: none; color: inherit; }

/* Nav */
.glass-nav {
    position: sticky;
    top: 20px;
    z-index: 100;
    margin-bottom: 40px;
}

.nav-box {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 30px;
    box-shadow: var(--glass-shadow);
}

.brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 800;
    font-size: 20px;
    letter-spacing: -0.5px;
}

.logo-leaf { color: var(--primary-color); }

.menu { display: flex; gap: 30px; }
.menu-item { font-weight: 600; color: var(--text-sub); transition: color 0.2s; }
.menu-item:hover, .menu-item.active { color: var(--primary-color); }

.btn-glass-sm {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    padding: 8px 20px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 14px;
    transition: all 0.2s;
}

.btn-glass-sm:hover { background: var(--primary-color); color: white; }

/* Hero */
.glass-hero {
    padding: 80px 0;
}

.hero-content {
    display: flex;
    align-items: center;
    gap: 60px;
}

.hero-text { flex: 1; }

.badge-soft {
    display: inline-block;
    background: rgba(255,255,255,0.8);
    border: 1px solid rgba(0,0,0,0.05);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-sub);
    margin-bottom: 24px;
}

.display-title {
    font-size: 56px;
    line-height: 1.1;
    font-weight: 800;
    margin-bottom: 24px;
    letter-spacing: -1px;
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.lead-text {
    font-size: 18px;
    color: var(--text-sub);
    line-height: 1.6;
    margin-bottom: 40px;
}

.hero-btns { display: flex; gap: 16px; }

.btn-primary-glass {
    background: var(--primary-color);
    color: white;
    padding: 16px 32px;
    border-radius: 14px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 10px 25px rgba(37, 99, 235, 0.3);
    transition: transform 0.2s;
}

.btn-primary-glass:hover { transform: translateY(-2px); }

.link-glass {
    padding: 16px 32px;
    font-weight: 600;
    color: var(--text-sub);
    transition: color 0.2s;
}

.link-glass:hover { color: var(--text-main); text-decoration: underline; }

/* Visual */
.hero-visual-glass {
    flex: 1;
    position: relative;
    height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.glass-card {
    width: 340px;
    background: rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: 24px;
    padding: 24px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.05);
    position: relative;
    z-index: 10;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.dots { display: flex; gap: 6px; }
.dots span { width: 10px; height: 10px; background: rgba(0,0,0,0.1); border-radius: 50%; }

.card-title { font-size: 12px; font-weight: 700; color: rgba(0,0,0,0.4); text-transform: uppercase; }

.device-row {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.d-icon {
    width: 50px;
    height: 50px;
    background: white;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

.d-info strong { display: block; font-size: 16px; }
.d-info span { font-size: 12px; color: var(--text-sub); }
.d-stat { margin-left: auto; font-weight: 700; color: #10b981; }

.storage-bar {
    height: 8px;
    background: rgba(255,255,255,0.5);
    border-radius: 4px;
    margin-bottom: 30px;
    overflow: hidden;
}

.s-fill { height: 100%; background: var(--primary-color); border-radius: 4px; }

.action-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.act-btn {
    background: rgba(255,255,255,0.6);
    padding: 12px;
    border-radius: 12px;
    text-align: center;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.act-btn:hover { background: white; }

.glass-float {
    position: absolute;
    background: white;
    padding: 10px 20px;
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    font-weight: 600;
    font-size: 14px;
    animation: float 6s ease-in-out infinite;
}

.f-icon { font-size: 18px; }

.f1 { top: 80px; left: 0; }
.f2 { bottom: 100px; right: -20px; animation-delay: 2s; }

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* Features */
.glass-features {
    padding: 100px 0;
}

.section-head-center { text-align: center; margin-bottom: 60px; }
.section-head-center h2 { font-size: 36px; margin-bottom: 10px; }
.section-head-center p { color: var(--text-sub); }

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-box {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 40px;
    border-radius: 24px;
    transition: transform 0.3s;
}

.feature-box:hover { transform: translateY(-5px); background: white; }

.fb-icon { font-size: 40px; margin-bottom: 20px; }
.feature-box h3 { font-size: 20px; margin-bottom: 10px; }
.feature-box p { color: var(--text-sub); line-height: 1.6; }

/* Footer */
.glass-footer {
    border-top: 1px solid rgba(0,0,0,0.05);
    padding: 40px 0;
    margin-top: 60px;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.f-left strong { display: block; font-size: 18px; }
.f-left p { font-size: 13px; color: var(--text-sub); margin: 5px 0 0; }

.f-right { display: flex; gap: 30px; font-size: 13px; color: var(--text-sub); }
.f-right a:hover { color: var(--text-main); }