:root {
    --bg-white: #ffffff;
    --bg-light: #f5f6f8;
    --text-main: #262626;
    --text-muted: #8e8e8e;
    --border-color: #dbdbdb;
    --primary-blue: #0095f6;
    --primary-hover: #1877f2;
    --ig-gradient: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
    --shadow: 0 10px 30px rgba(0,0,0,0.08);
}
* { margin: 0; padding: 0; box-sizing: border-box; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
body { background: var(--bg-light); color: var(--text-main); line-height: 1.6; }
a { text-decoration: none; color: inherit; }

/* Navigation */
.nav { background: var(--bg-white); border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 100; display: flex; justify-content: space-between; align-items: center; padding: 15px 5%; height: 65px; }
.nav-brand { font-size: 24px; font-weight: 700; color: var(--text-main); }
.nav-links { display: flex; gap: 20px; align-items: center; }
.nav-links a { font-size: 14px; font-weight: 600; color: var(--text-main); transition: color 0.2s; }
.nav-links a:hover, .nav-links a.active { color: var(--primary-blue); }

/* QR Code Download Hero Layout */
.hero { display: flex; justify-content: space-between; align-items: center; padding: 80px 10%; background: var(--bg-white); border-bottom: 1px solid var(--border-color); flex-wrap: wrap; gap: 40px; }
.hero-content { flex: 1; min-width: 300px; max-width: 500px; }
.hero-title { font-size: 42px; font-weight: 800; margin-bottom: 20px; line-height: 1.2; letter-spacing: -1px; }
.hero-subtitle { font-size: 16px; color: var(--text-muted); margin-bottom: 30px; }
.hero-btns { display: flex; gap: 15px; margin-bottom: 30px; flex-wrap: wrap; }
.btn { padding: 12px 24px; border-radius: 6px; font-size: 15px; font-weight: 600; cursor: pointer; transition: 0.2s; border: none; text-align: center; }
.btn-primary { background: var(--primary-blue); color: var(--bg-white); }
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-2px); }
.btn-outline { background: transparent; color: var(--text-main); border: 1px solid var(--border-color); }
.btn-outline:hover { border-color: var(--text-muted); }

.hero-qr-section { display: flex; flex-direction: column; align-items: center; background: var(--bg-light); padding: 30px; border-radius: 16px; border: 1px solid var(--border-color); box-shadow: var(--shadow); }
.qr-placeholder { width: 160px; height: 160px; background: white; border: 1px solid var(--border-color); display: flex; align-items: center; justify-content: center; margin-bottom: 15px; border-radius: 8px; }
/* Simulated QR Code look */
.qr-placeholder::before { content: 'QR CODE'; font-weight: bold; color: #ccc; }
.qr-text { font-size: 14px; font-weight: 600; color: var(--text-main); text-align: center; }
.qr-subtext { font-size: 12px; color: var(--text-muted); text-align: center; margin-top: 5px; }

/* Stats Bar */
.stats { display: flex; justify-content: center; gap: 60px; padding: 30px 20px; flex-wrap: wrap; background: var(--bg-white); border-bottom: 1px solid var(--border-color); }
.stat-box { text-align: center; }
.stat-box h3 { font-size: 22px; font-weight: 700; color: var(--text-main); margin-bottom: 5px; }
.stat-box p { font-size: 13px; color: var(--text-muted); }

/* Main Container */
.container { max-width: 1000px; margin: 0 auto; padding: 60px 20px; }
.section-title { font-size: 28px; font-weight: 700; text-align: center; margin-bottom: 40px; }

/* Text Content */
.info-box { background: var(--bg-white); padding: 40px; border-radius: 12px; border: 1px solid var(--border-color); margin-bottom: 60px; text-align: center; }
.info-box p { font-size: 15px; color: var(--text-muted); margin-bottom: 15px; line-height: 1.8; }
.info-box p:last-child { margin-bottom: 0; }

/* Feature Grid */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 25px; margin-bottom: 60px; }
.card { background: var(--bg-white); border: 1px solid var(--border-color); border-radius: 12px; padding: 30px 25px; transition: 0.2s; }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.card-icon { width: 40px; height: 40px; background: var(--ig-gradient); border-radius: 8px; margin-bottom: 20px; }
.card h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; color: var(--text-main); }
.card p { font-size: 14px; color: var(--text-muted); }

/* Images */
.showcase-img { width: 100%; border-radius: 12px; border: 1px solid var(--border-color); box-shadow: var(--shadow); margin-bottom: 60px; }

/* Guide / FAQ */
.list-wrap { max-width: 800px; margin: 0 auto 60px; }
.list-item { background: var(--bg-white); border: 1px solid var(--border-color); padding: 25px; margin-bottom: 15px; border-radius: 8px; }
.list-item h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.list-item p { font-size: 14px; color: var(--text-muted); }

/* Footer */
.footer { background: var(--bg-white); border-top: 1px solid var(--border-color); padding: 50px 20px 30px; text-align: center; }
.footer-links { display: flex; justify-content: center; gap: 20px; margin-bottom: 20px; flex-wrap: wrap; }
.footer-links a { color: var(--text-muted); font-size: 14px; font-weight: 500; }
.footer-links a:hover { color: var(--text-main); }
.footer p { color: #a8a8a8; font-size: 12px; }