:root {
    --ig-orange: #f09433;
    --ig-red: #e6683c;
    --ig-magenta: #dc2743;
    --ig-purple: #cc2366;
    --ig-blue: #bc1888;
    --bg-dark: #121212;
    --bg-panel: #1e1e1e;
    --text-main: #ffffff;
    --text-muted: #a0a0a0;
    --accent: #3797f0;
    --border: #333333;
    --gradient: linear-gradient(45deg, var(--ig-orange), var(--ig-magenta), var(--ig-purple));
    --shadow: 0 10px 30px rgba(0,0,0,0.5);
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
body { background: var(--bg-dark); color: var(--text-main); line-height: 1.6; }
a { text-decoration: none; color: inherit; transition: 0.3s; }

/* Desktop App Style Nav */
.nav { background: var(--bg-panel); border-bottom: 1px solid var(--border); padding: 0 30px; height: 64px; display: flex; justify-content: space-between; align-items: center; position: sticky; top: 0; z-index: 100; box-shadow: 0 2px 10px rgba(0,0,0,0.3); }
.nav-brand { font-size: 20px; font-weight: 700; display: flex; align-items: center; gap: 10px; }
.nav-brand::before { content: ''; width: 24px; height: 24px; background: var(--gradient); border-radius: 6px; display: inline-block; }
.nav-links { display: flex; gap: 24px; }
.nav-links a { font-size: 13px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }
.nav-links a:hover, .nav-links a.active { color: var(--text-main); }
.nav-btn { background: var(--accent); color: white !important; padding: 6px 16px; border-radius: 4px; }
.nav-btn:hover { background: #1877f2; }

/* Software Hero Poster */
.hero { display: flex; align-items: center; justify-content: center; padding: 80px 5%; min-height: 80vh; background: radial-gradient(circle at center, #1a1a1a 0%, var(--bg-dark) 100%); overflow: hidden; position: relative; }
.hero-content { flex: 1; max-width: 500px; position: relative; z-index: 2; }
.hero-tag { display: inline-block; padding: 4px 12px; background: rgba(255,255,255,0.1); border: 1px solid var(--border); border-radius: 20px; font-size: 11px; font-weight: 600; letter-spacing: 2px; margin-bottom: 20px; color: var(--text-muted); }
.hero h1 { font-size: 52px; font-weight: 800; line-height: 1.1; margin-bottom: 20px; letter-spacing: -1px; }
.hero h1 span { background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero p { font-size: 16px; color: var(--text-muted); margin-bottom: 40px; font-weight: 400; line-height: 1.8; }
.btn-group { display: flex; gap: 15px; flex-wrap: wrap; }
.btn { padding: 14px 28px; border-radius: 6px; font-size: 14px; font-weight: 600; cursor: pointer; border: none; display: flex; align-items: center; gap: 10px; transition: 0.3s; }
.btn-primary { background: var(--accent); color: white; }
.btn-primary:hover { background: #1877f2; box-shadow: 0 4px 15px rgba(55, 151, 240, 0.4); }
.btn-secondary { background: var(--bg-panel); color: var(--text-main); border: 1px solid var(--border); }
.btn-secondary:hover { background: #2a2a2a; border-color: #555; }

/* Mockup Presentation */
.hero-mockup { flex: 1; max-width: 700px; position: relative; z-index: 2; perspective: 1000px; }
.hero-mockup img { width: 100%; border-radius: 12px; box-shadow: var(--shadow); transform: rotateY(-5deg) rotateX(2deg); transition: 0.5s; border: 1px solid var(--border); }
.hero-mockup:hover img { transform: rotateY(0) rotateX(0); }

/* Software Stats Data */
.stats { display: flex; justify-content: center; gap: 60px; padding: 40px 20px; background: var(--bg-panel); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.stat-box { text-align: center; }
.stat-box h3 { font-size: 28px; font-weight: 700; color: var(--text-main); margin-bottom: 5px; font-family: monospace; }
.stat-box p { font-size: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }

/* Container */
.container { max-width: 1200px; margin: 0 auto; padding: 80px 20px; }
.section-title { font-size: 28px; font-weight: 800; margin-bottom: 40px; padding-bottom: 15px; border-bottom: 1px solid var(--border); }

/* Tech About */
.about-box { background: var(--bg-panel); border-radius: 12px; padding: 40px; margin-bottom: 60px; border: 1px solid var(--border); display: flex; gap: 40px; align-items: center; }
.about-text { flex: 2; }
.about-text p { font-size: 15px; color: var(--text-muted); margin-bottom: 15px; line-height: 1.7; }
.about-text p:last-child { margin-bottom: 0; }
.about-logo { flex: 1; display: flex; justify-content: center; font-size: 100px; opacity: 0.1; }

/* Features Grid - Software Cards */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; margin-bottom: 80px; }
.card { background: var(--bg-panel); border-radius: 8px; padding: 30px; border: 1px solid var(--border); transition: 0.3s; position: relative; overflow: hidden; }
.card::before { content: ''; position: absolute; top: 0; left: 0; width: 4px; height: 100%; background: var(--border); transition: 0.3s; }
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: #444; }
.card:hover::before { background: var(--gradient); }
.card h3 { font-size: 18px; font-weight: 700; margin-bottom: 12px; color: var(--text-main); }
.card p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

/* App Showcase Image */
.showcase-img { width: 100%; border-radius: 12px; border: 1px solid var(--border); margin-bottom: 80px; box-shadow: var(--shadow); display: block; }

/* Terminal Style FAQ/Steps */
.list-wrapper { max-width: 800px; margin: 0 auto 80px; background: #000; border-radius: 8px; border: 1px solid var(--border); overflow: hidden; }
.list-header { background: var(--bg-panel); padding: 10px 20px; border-bottom: 1px solid var(--border); display: flex; gap: 8px; }
.dot { width: 12px; height: 12px; border-radius: 50%; background: #ff5f56; }
.dot:nth-child(2) { background: #ffbd2e; }
.dot:nth-child(3) { background: #27c93f; }
.list-body { padding: 30px; }
.list-item { margin-bottom: 25px; }
.list-item:last-child { margin-bottom: 0; }
.list-item h4 { font-size: 15px; font-weight: 600; color: var(--accent); margin-bottom: 8px; display: flex; align-items: center; gap: 10px; }
.list-item h4::before { content: '>'; color: var(--text-muted); }
.list-item p { font-size: 14px; color: #d0d0d0; padding-left: 20px; line-height: 1.6; }

/* Clean Footer */
.footer { background: var(--bg-panel); border-top: 1px solid var(--border); padding: 40px 20px; text-align: center; }
.footer-links { display: flex; justify-content: center; gap: 30px; margin-bottom: 20px; flex-wrap: wrap; }
.footer-links a { color: var(--text-muted); font-size: 13px; font-weight: 500; }
.footer-links a:hover { color: var(--text-main); }
.footer p { color: #666; font-size: 12px; }

@media (max-width: 900px) {
    .hero { flex-direction: column; text-align: center; padding: 40px 20px; }
    .hero-content { margin-bottom: 40px; }
    .btn-group { justify-content: center; }
    .about-box { flex-direction: column; text-align: center; }
}