:root {
    --ig-orange: #f09433;
    --ig-magenta: #dc2743;
    --ig-purple: #cc2366;
    --bg-main: #f0f2f5;
    --bg-white: #ffffff;
    --text-dark: #333333;
    --text-muted: #666666;
    --border-color: #e0e0e0;
    --btn-blue: #0078d4;
    --btn-blue-hover: #0056b3;
    --shadow: 0 4px 15px rgba(0,0,0,0.05);
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
body { background: var(--bg-main); color: var(--text-dark); line-height: 1.6; }
a { text-decoration: none; color: inherit; transition: 0.2s; }

/* Computer Screen Nav */
.nav-wrap { background: var(--bg-white); border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 100; box-shadow: 0 2px 5px rgba(0,0,0,0.02); }
.nav { max-width: 1200px; margin: 0 auto; height: 60px; padding: 0 20px; display: flex; justify-content: space-between; align-items: center; }
.nav-brand { font-size: 20px; font-weight: 700; display: flex; align-items: center; gap: 8px; }
.nav-brand::before { content: '💻'; font-size: 24px; }
.nav-links { display: flex; gap: 24px; }
.nav-links a { font-size: 14px; font-weight: 600; color: var(--text-muted); }
.nav-links a:hover, .nav-links a.active { color: var(--btn-blue); }
.nav-btn { background: var(--btn-blue); color: white !important; padding: 6px 16px; border-radius: 4px; }
.nav-btn:hover { background: var(--btn-blue-hover); }

/* Desktop Screen Hero */
.hero { max-width: 1200px; margin: 40px auto; padding: 0 20px; display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.hero-content { flex: 1; max-width: 500px; }
.hero h1 { font-size: 42px; font-weight: 800; line-height: 1.2; margin-bottom: 15px; color: #1a1a1a; }
.hero p { font-size: 16px; color: var(--text-muted); margin-bottom: 30px; line-height: 1.6; }
.btn-group { display: flex; gap: 12px; flex-wrap: wrap; }
.btn { padding: 12px 24px; border-radius: 4px; font-size: 14px; font-weight: 600; cursor: pointer; border: none; display: flex; align-items: center; gap: 8px; }
.btn-primary { background: var(--btn-blue); color: white; box-shadow: 0 4px 10px rgba(0, 120, 212, 0.3); }
.btn-primary:hover { background: var(--btn-blue-hover); }
.btn-secondary { background: white; color: var(--text-dark); border: 1px solid var(--border-color); }
.btn-secondary:hover { background: #f8f9fa; }

/* Computer Monitor Mockup */
.hero-visual { flex: 1; display: flex; justify-content: center; }
.monitor { width: 100%; max-width: 550px; background: #e0e0e0; padding: 15px 15px 25px; border-radius: 12px 12px 0 0; position: relative; box-shadow: 0 15px 30px rgba(0,0,0,0.1); border: 2px solid #ccc; }
.monitor::after { content: ''; position: absolute; bottom: -20px; left: 50%; transform: translateX(-50%); width: 120px; height: 20px; background: #ccc; border-radius: 0 0 10px 10px; }
.monitor-screen { background: white; width: 100%; height: 320px; border-radius: 4px; overflow: hidden; position: relative; display: flex; flex-direction: column; }
.screen-header { height: 24px; background: #f1f1f1; border-bottom: 1px solid #ddd; display: flex; align-items: center; padding: 0 10px; gap: 5px; }
.screen-dot { width: 8px; height: 8px; border-radius: 50%; background: #ccc; }
.screen-dot:nth-child(1) { background: #ff5f56; }
.screen-dot:nth-child(2) { background: #ffbd2e; }
.screen-dot:nth-child(3) { background: #27c93f; }
.screen-content { flex: 1; padding: 20px; background: url('1.webp') center/cover; opacity: 0.9; }

/* Stats */
.stats { max-width: 1200px; margin: 0 auto 60px; display: flex; justify-content: space-around; padding: 30px 20px; background: white; border-radius: 8px; box-shadow: var(--shadow); border: 1px solid var(--border-color); flex-wrap: wrap; gap: 20px; }
.stat-box { text-align: center; }
.stat-box h3 { font-size: 28px; font-weight: 700; color: var(--btn-blue); margin-bottom: 5px; }
.stat-box p { font-size: 13px; color: var(--text-muted); font-weight: 600; text-transform: uppercase; }

/* Container */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px 60px; }
.section-title { font-size: 28px; font-weight: 700; text-align: center; margin-bottom: 40px; color: #1a1a1a; }

/* Content Box */
.about-box { background: white; border-radius: 8px; padding: 40px; text-align: center; box-shadow: var(--shadow); border: 1px solid var(--border-color); margin-bottom: 60px; }
.about-box p { font-size: 15px; color: var(--text-muted); margin-bottom: 15px; line-height: 1.8; }
.about-box p:last-child { margin-bottom: 0; }

/* Software Features Grid */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; margin-bottom: 60px; }
.card { background: white; border-radius: 8px; padding: 30px; border: 1px solid var(--border-color); display: flex; gap: 15px; align-items: flex-start; transition: 0.3s; box-shadow: var(--shadow); }
.card:hover { transform: translateY(-3px); border-color: var(--btn-blue); box-shadow: 0 8px 20px rgba(0,0,0,0.08); }
.card-icon { font-size: 24px; background: rgba(0, 120, 212, 0.1); width: 48px; height: 48px; border-radius: 8px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; color: var(--btn-blue); }
.card h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; color: #1a1a1a; }
.card p { font-size: 13px; color: var(--text-muted); line-height: 1.5; }

/* Full width image */
.showcase-img { width: 100%; border-radius: 8px; box-shadow: var(--shadow); margin-bottom: 60px; border: 1px solid var(--border-color); display: block; }

/* Steps */
.list-wrapper { max-width: 800px; margin: 0 auto 60px; background: white; border-radius: 8px; border: 1px solid var(--border-color); padding: 30px; box-shadow: var(--shadow); }
.list-item { display: flex; gap: 15px; margin-bottom: 25px; align-items: center; }
.list-item:last-child { margin-bottom: 0; }
.list-num { background: var(--btn-blue); color: white; width: 30px; height: 30px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 14px; font-weight: bold; flex-shrink: 0; }
.list-text h3 { font-size: 15px; font-weight: 600; margin-bottom: 5px; color: #1a1a1a; }
.list-text p { font-size: 13px; color: var(--text-muted); }

/* Footer */
.footer { background: white; border-top: 1px solid var(--border-color); padding: 40px 20px; text-align: center; }
.footer-links { display: flex; justify-content: center; gap: 30px; margin-bottom: 15px; flex-wrap: wrap; }
.footer-links a { color: var(--text-muted); font-size: 13px; font-weight: 500; }
.footer-links a:hover { color: var(--btn-blue); }
.footer p { color: #888; font-size: 12px; }

@media (max-width: 850px) {
    .hero { flex-direction: column; text-align: center; }
    .hero-content { max-width: 100%; margin-bottom: 30px; }
    .btn-group { justify-content: center; }
}