:root {
    --dl-bg: #f0f4f8;
    --dl-text: #2d3748;
    --dl-primary: #3182ce; /* Blue */
    --dl-secondary: #ffffff;
    --dl-accent: #38a169; /* Green */
    --dl-border: #e2e8f0;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    background-color: var(--dl-bg); color: var(--dl-text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6; overflow-x: hidden;
}

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

/* Header */
.dl-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 20px 0; margin-bottom: 40px; border-bottom: 1px solid var(--dl-border);
}
.dl-brand {
    font-size: 24px; font-weight: 700; color: var(--dl-primary);
    display: flex; align-items: center; gap: 8px;
}
.dl-brand::before {
    content: '⬇️'; font-size: 24px;
}
.dl-nav { display: flex; gap: 25px; }
.dl-nav a {
    font-size: 15px; font-weight: 500; color: #4a5568; text-decoration: none;
    transition: color 0.2s;
}
.dl-nav a:hover, .dl-nav a.active { color: var(--dl-primary); }

/* Hero */
.dl-hero {
    text-align: center; margin-bottom: 60px; padding: 60px 20px;
    background: var(--dl-secondary); border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}
.dl-hero h1 {
    font-size: 40px; color: #1a202c; margin-bottom: 15px; font-weight: 700;
}
.dl-hero p { font-size: 18px; color: #718096; margin-bottom: 30px;}

.btn-dl {
    display: inline-flex; align-items: center; gap: 10px; padding: 15px 35px; font-size: 18px; font-weight: 600;
    color: #fff; background: var(--dl-primary); border-radius: 8px;
    text-decoration: none; transition: background 0.2s;
}
.btn-dl:hover { background: #2b6cb0; }
.btn-dl::before { content: '↓'; font-size: 20px;}

/* Download Grid */
.dl-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; margin-bottom: 80px;
}
.dl-card {
    background: var(--dl-secondary); padding: 40px 30px; border-radius: 12px;
    text-align: center; box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    border: 1px solid var(--dl-border); transition: transform 0.3s;
}
.dl-card:hover { transform: translateY(-5px); }
.dl-icon { font-size: 48px; margin-bottom: 20px; color: var(--dl-primary);}
.dl-card h3 { font-size: 22px; color: #1a202c; margin-bottom: 10px;}
.dl-card p { font-size: 14px; color: #718096; margin-bottom: 25px;}
.dl-meta { font-size: 13px; color: #a0aec0; margin-bottom: 20px; display: flex; justify-content: center; gap: 15px;}
.btn-dl-sm {
    display: inline-block; padding: 10px 25px; font-size: 14px; font-weight: 600;
    color: var(--dl-primary); background: transparent; border: 2px solid var(--dl-primary);
    border-radius: 6px; text-decoration: none; transition: all 0.2s;
}
.btn-dl-sm:hover { background: var(--dl-primary); color: #fff;}

/* Features */
.dl-features { margin-bottom: 80px; text-align: center;}
.dl-features h2 { font-size: 28px; margin-bottom: 40px; color: #1a202c;}
.df-list { display: flex; justify-content: center; gap: 40px; flex-wrap: wrap;}
.df-item { max-width: 250px;}
.df-item h3 { font-size: 18px; color: var(--dl-primary); margin-bottom: 10px;}
.df-item p { font-size: 14px; color: #718096;}

/* FAQ */
.dl-faq { margin-bottom: 80px; }
.dl-faq h2 { font-size: 28px; text-align: center; margin-bottom: 40px; color: #1a202c;}
.d-faq-item {
    background: var(--dl-secondary); padding: 25px; border-radius: 8px;
    margin-bottom: 15px; border: 1px solid var(--dl-border);
}
.d-fq { font-size: 16px; font-weight: 600; color: #1a202c; margin-bottom: 10px;}
.d-fa { font-size: 15px; color: #4a5568;}

footer {
    text-align: center; padding: 30px 0; color: #a0aec0; font-size: 14px;
}

@media (max-width: 768px) {
    .dl-header { flex-direction: column; gap: 15px; }
    .df-list { flex-direction: column; align-items: center; gap: 20px;}
}