:root {
    --bg-main: #f8fafc;
    --bg-card: #ffffff;
    --text-dark: #0f172a;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    
    /* Instagram Brand Gradient */
    --ig-orange: #f56040;
    --ig-red: #fd1d1d;
    --ig-pink: #e1306c;
    --ig-purple: #c13584;
    --ig-blue: #405de6;
    
    --brand-gradient: linear-gradient(45deg, var(--ig-orange), var(--ig-red), var(--ig-pink), var(--ig-purple), var(--ig-blue));
    
    /* Highlight Action Color */
    --action-color: #e1306c;
    --action-hover: #c13584;
    
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    
    --radius-md: 8px;
    --radius-lg: 16px;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, 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; transition: 0.2s; }
ul { list-style: none; }

/* Navbar */
.nav { padding: 16px 5%; background: var(--bg-card); border-bottom: 1px solid var(--border-color); display: flex; justify-content: space-between; align-items: center; position: sticky; top: 0; z-index: 100; box-shadow: var(--shadow-sm); }
.nav-brand { font-size: 24px; font-weight: 800; letter-spacing: -0.5px; background: var(--brand-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.nav-links { display: flex; gap: 32px; }
.nav-links a { font-size: 15px; font-weight: 500; color: var(--text-muted); transition: 0.2s; }
.nav-links a:hover, .nav-links a.active { color: var(--action-color); }
.nav-btn { background: var(--action-color); color: #fff !important; padding: 8px 24px; border-radius: 30px; font-weight: 600; font-size: 14px; box-shadow: 0 4px 14px rgba(225, 48, 108, 0.4); }
.nav-btn:hover { background: var(--action-hover); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(225, 48, 108, 0.5); }

/* Focus Hero */
.hero { display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 70vh; text-align: center; padding: 60px 20px; background: radial-gradient(circle at top, #fff 0%, var(--bg-main) 100%); }
.hero-tag { font-size: 13px; font-weight: 700; color: var(--action-color); text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 20px; padding: 6px 16px; background: rgba(225, 48, 108, 0.1); border-radius: 20px; }
.hero h1 { font-size: 56px; font-weight: 800; line-height: 1.1; margin-bottom: 20px; letter-spacing: -1px; color: var(--text-dark); }
.hero p { font-size: 18px; color: var(--text-muted); max-width: 600px; margin: 0 auto 40px; }
.btn-group { display: flex; gap: 16px; justify-content: center; }
/* Highlight Button */
.btn { padding: 16px 40px; border-radius: 30px; font-size: 16px; font-weight: 700; cursor: pointer; transition: 0.2s; display: inline-flex; justify-content: center; align-items: center; letter-spacing: 0.5px; }
.btn-primary { background: var(--action-color); color: #fff; box-shadow: 0 8px 25px rgba(225, 48, 108, 0.4); animation: pulse-shadow 2s infinite; }
.btn-primary:hover { background: var(--action-hover); transform: translateY(-2px); box-shadow: 0 12px 30px rgba(225, 48, 108, 0.5); }
.btn-secondary { background: var(--bg-card); color: var(--text-dark); border: 1px solid var(--border-color); box-shadow: var(--shadow-sm); }
.btn-secondary:hover { border-color: var(--action-color); color: var(--action-color); transform: translateY(-2px); }

@keyframes pulse-shadow {
    0% { box-shadow: 0 0 0 0 rgba(225, 48, 108, 0.4); }
    70% { box-shadow: 0 0 0 15px rgba(225, 48, 108, 0); }
    100% { box-shadow: 0 0 0 0 rgba(225, 48, 108, 0); }
}

/* Stats */
.stats { display: flex; justify-content: center; gap: 24px; max-width: 1000px; margin: 0 auto 80px; padding: 0 20px; flex-wrap: wrap; }
.stat-box { background: var(--bg-card); border-radius: var(--radius-md); padding: 30px 20px; text-align: center; flex: 1; min-width: 200px; box-shadow: var(--shadow-sm); border: 1px solid var(--border-color); transition: 0.2s; }
.stat-box:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--action-color); }
.stat-box h3 { font-size: 32px; font-weight: 800; color: var(--text-dark); margin-bottom: 8px; }
.stat-box p { font-size: 14px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }

/* Container Base */
.container { max-width: 1000px; margin: 0 auto; padding: 0 20px; }
.section-title { font-size: 28px; font-weight: 800; text-align: center; margin-bottom: 40px; color: var(--text-dark); }

/* About */
.about-panel { background: var(--bg-card); padding: 40px; border-radius: var(--radius-lg); margin-bottom: 80px; box-shadow: var(--shadow-sm); border: 1px solid var(--border-color); text-align: center; }
.about-panel p { font-size: 16px; color: var(--text-muted); line-height: 1.8; margin-bottom: 20px; }
.about-panel p:last-child { margin-bottom: 0; }

/* Features Grid */
.feat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; margin-bottom: 80px; }
.feat-card { background: var(--bg-card); padding: 32px 24px; border-radius: var(--radius-md); box-shadow: var(--shadow-sm); border: 1px solid var(--border-color); text-align: center; transition: 0.2s; }
.feat-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.feat-icon { width: 56px; height: 56px; background: rgba(225, 48, 108, 0.1); color: var(--action-color); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 24px; margin: 0 auto 20px; }
.feat-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 12px; color: var(--text-dark); }
.feat-card p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

/* Visual Focus Areas */
.focus-media { margin-bottom: 80px; text-align: center; background: var(--bg-card); padding: 20px; border-radius: var(--radius-lg); box-shadow: var(--shadow-md); border: 1px solid var(--border-color); }
.focus-media img { max-width: 100%; border-radius: var(--radius-md); }

/* Guide */
.guide-list { max-width: 800px; margin: 0 auto 80px; }
.guide-item { display: flex; gap: 24px; background: var(--bg-card); padding: 24px; border-radius: var(--radius-md); margin-bottom: 16px; box-shadow: var(--shadow-sm); border: 1px solid var(--border-color); align-items: center; }
.guide-num { width: 48px; height: 48px; background: var(--action-color); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 20px; font-weight: 800; flex-shrink: 0; box-shadow: 0 4px 10px rgba(225, 48, 108, 0.3); }
.guide-info h3 { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
.guide-info p { font-size: 15px; color: var(--text-muted); }

/* FAQ */
.faq-wrap { max-width: 800px; margin: 0 auto 80px; }
.faq-box { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: 24px; margin-bottom: 16px; box-shadow: var(--shadow-sm); }
.faq-q { font-size: 16px; font-weight: 700; color: var(--text-dark); margin-bottom: 12px; display: flex; gap: 12px; align-items: flex-start; }
.faq-q::before { content: 'Q.'; color: var(--action-color); font-size: 18px; font-weight: 900; }
.faq-a { font-size: 15px; color: var(--text-muted); line-height: 1.7; padding-left: 28px; }

/* Footer */
.footer { background: var(--bg-card); padding: 40px 20px; text-align: center; border-top: 1px solid var(--border-color); }
.footer-brand { font-size: 20px; font-weight: 800; margin-bottom: 24px; color: var(--text-dark); }
.footer-links { display: flex; justify-content: center; gap: 32px; margin-bottom: 24px; flex-wrap: wrap; }
.footer-links a { color: var(--text-muted); font-size: 14px; font-weight: 500; }
.footer-links a:hover { color: var(--action-color); }
.footer-copy { color: #94a3b8; font-size: 13px; }

@media (max-width: 768px) {
    .nav-links { display: none; }
    .hero h1 { font-size: 40px; }
    .btn-group { flex-direction: column; width: 100%; max-width: 300px; }
    .btn { width: 100%; }
    .guide-item { flex-direction: column; text-align: center; gap: 16px; }
}