:root {
    --ig-gradient: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
    --bg-main: #ffffff;
    --bg-alt: #fafafa;
    --text-dark: #121212;
    --text-muted: #737373;
    --border-color: #dbdbdb;
}

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

/* Navigation */
.nav { position: sticky; top: 0; background: rgba(255, 255, 255, 0.95); backdrop-filter: blur(10px); z-index: 1000; border-bottom: 1px solid var(--border-color); padding: 20px 5%; display: flex; justify-content: space-between; align-items: center; }
.nav-brand { font-size: 28px; font-weight: 900; background: var(--ig-gradient); -webkit-background-clip: text; color: transparent; letter-spacing: -1px; }
.nav-links a { margin-left: 30px; font-weight: 600; font-size: 16px; transition: color 0.2s; }
.nav-links a:hover { color: #cc2366; }

/* Hero Section (Big Title + Gradient) */
.hero { text-align: center; padding: 120px 20px; background: var(--bg-main); }
.hero h1 { font-size: 64px; font-weight: 900; line-height: 1.1; margin-bottom: 20px; background: var(--ig-gradient); -webkit-background-clip: text; color: transparent; letter-spacing: -2px; }
.hero p { font-size: 20px; color: var(--text-muted); max-width: 700px; margin: 0 auto 40px; font-weight: 500; }
.btn-group { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; }
.btn { padding: 16px 40px; border-radius: 50px; font-weight: 700; font-size: 18px; text-align: center; display: inline-block; transition: all 0.3s; }
.btn-primary { background: var(--ig-gradient); color: white; border: none; box-shadow: 0 10px 20px rgba(220, 39, 67, 0.2); }
.btn-primary:hover { box-shadow: 0 15px 30px rgba(220, 39, 67, 0.4); transform: translateY(-3px); }
.btn-secondary { background: white; color: var(--text-dark); border: 2px solid var(--border-color); }
.btn-secondary:hover { border-color: var(--text-dark); transform: translateY(-3px); }

/* Data Bar */
.data-bar { display: flex; justify-content: center; gap: 60px; flex-wrap: wrap; padding: 60px 20px; background: var(--bg-alt); border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); }
.data-item { text-align: center; }
.data-item h3 { font-size: 48px; font-weight: 900; color: var(--text-dark); letter-spacing: -1px; }
.data-item p { font-size: 16px; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 1px; }

/* Sections */
.container { max-width: 1200px; margin: 0 auto; padding: 80px 20px; }
.section-title { text-align: center; font-size: 42px; font-weight: 900; margin-bottom: 60px; letter-spacing: -1px; }
.text-center { text-align: center; }

/* Feature Cards */
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 40px; }
.card { background: var(--bg-main); padding: 40px; border-radius: 24px; box-shadow: 0 10px 40px rgba(0,0,0,0.04); border: 1px solid var(--border-color); transition: transform 0.3s; }
.card:hover { transform: translateY(-10px); }
.card h3 { font-size: 24px; font-weight: 800; margin-bottom: 15px; color: var(--text-dark); }
.card p { font-size: 16px; color: var(--text-muted); line-height: 1.6; }

/* Images */
.img-fluid { max-width: 100%; height: auto; border-radius: 20px; display: block; margin: 0 auto; box-shadow: 0 20px 50px rgba(0,0,0,0.1); }

/* FAQ */
.faq-item { margin-bottom: 30px; padding-bottom: 30px; border-bottom: 1px solid var(--border-color); }
.faq-item h3 { font-size: 22px; font-weight: 800; margin-bottom: 15px; }
.faq-item p { font-size: 16px; color: var(--text-muted); }

/* Guide */
.guide-step { text-align: center; }
.guide-step h3 { font-size: 28px; font-weight: 900; margin: 20px 0 10px; background: var(--ig-gradient); -webkit-background-clip: text; color: transparent; }

/* Footer */
.footer { background: var(--bg-alt); padding: 60px 20px; text-align: center; border-top: 1px solid var(--border-color); }
.footer-links { margin-bottom: 30px; display: flex; justify-content: center; gap: 30px; flex-wrap: wrap; }
.footer-links a { font-weight: 600; color: var(--text-muted); transition: color 0.2s; }
.footer-links a:hover { color: var(--text-dark); }
.footer p { color: #a8a8a8; font-size: 14px; }