:root {
    --desk-bg: #eef2f5;
    --desk-text: #2c3e50;
    --desk-primary: #2980b9; /* Strong Blue */
    --desk-accent: #e74c3c; /* Red accent */
    --desk-card: #ffffff;
    --desk-border: #dcdde1;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    background-color: var(--desk-bg); color: var(--desk-text);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
}

.desk-container { max-width: 1100px; margin: 0 auto; padding: 0 30px; }

/* Header */
.desk-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 25px 0; margin-bottom: 50px;
    border-bottom: 1px solid var(--desk-border);
}
.desk-brand {
    font-size: 26px; font-weight: 700; color: var(--desk-primary);
    display: flex; align-items: center; gap: 10px;
}
.desk-brand::before { content: '🖥️'; font-size: 28px; }
.desk-nav { display: flex; gap: 30px; }
.desk-nav a {
    color: var(--desk-text); text-decoration: none; font-size: 15px;
    font-weight: 600; padding-bottom: 5px; border-bottom: 2px solid transparent;
    transition: all 0.3s;
}
.desk-nav a:hover, .desk-nav a.active {
    color: var(--desk-primary); border-bottom-color: var(--desk-primary);
}

/* Hero */
.desk-hero {
    display: flex; align-items: center; gap: 50px; margin-bottom: 80px;
}
.desk-hero-content { flex: 1; }
.desk-hero h1 { font-size: 42px; margin-bottom: 20px; color: #1a252f; line-height: 1.2;}
.desk-hero p { font-size: 18px; color: #7f8c8d; margin-bottom: 35px;}

.desk-window {
    flex: 1; background: var(--desk-card); border-radius: 8px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1); border: 1px solid var(--desk-border);
    overflow: hidden;
}
.window-titlebar {
    background: #ecf0f1; padding: 10px 15px; border-bottom: 1px solid var(--desk-border);
    display: flex; gap: 8px; align-items: center;
}
.w-dot { width: 12px; height: 12px; border-radius: 50%; }
.w-dot.r { background: #ff5f56; }
.w-dot.y { background: #ffbd2e; }
.w-dot.g { background: #27c93f; }
.window-content { padding: 40px; text-align: center; background: #fafafa;}

.btn-desk {
    display: inline-block; padding: 14px 35px; font-size: 16px; font-weight: bold;
    color: #fff; background: var(--desk-primary); border-radius: 5px;
    text-decoration: none; transition: background 0.3s;
}
.btn-desk:hover { background: #1c5980; }

/* Features */
.desk-features { margin-bottom: 80px; }
.d-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 40px; }
.d-card {
    background: var(--desk-card); padding: 40px; border-radius: 8px;
    border-left: 4px solid var(--desk-primary); box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}
.d-card h3 { font-size: 22px; margin-bottom: 15px; color: #1a252f;}
.d-card p { font-size: 15px; color: #7f8c8d;}

/* FAQ */
.desk-faq { background: var(--desk-card); padding: 50px; border-radius: 8px; margin-bottom: 80px; box-shadow: 0 5px 15px rgba(0,0,0,0.02);}
.desk-faq h2 { font-size: 28px; margin-bottom: 40px; color: #1a252f; border-bottom: 2px solid var(--desk-bg); padding-bottom: 15px;}
.d-faq-item { margin-bottom: 30px; }
.d-fq { font-weight: bold; font-size: 18px; color: var(--desk-primary); margin-bottom: 10px;}
.d-fa { color: #555; font-size: 15px; line-height: 1.8;}

footer {
    text-align: center; padding: 30px 0; color: #95a5a6; font-size: 14px;
    border-top: 1px solid var(--desk-border);
}

@media (max-width: 900px) {
    .desk-hero { flex-direction: column; }
    .d-grid { grid-template-columns: 1fr; }
}