* { box-sizing: border-box; }
body { margin: 0; font-family: "Segoe UI", Arial, sans-serif; color: #111827; background: #f4f7fb; }
a { color: inherit; text-decoration: none; }
.demo-shell { min-height: 100vh; background: linear-gradient(135deg, #f8fbff, #eef8f4); }
.demo-nav { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 22px 56px; background: rgba(255,255,255,.92); border-bottom: 1px solid #dfe5ee; }
.logo { font-weight: 900; font-size: 22px; color: #0f172a; }
.demo-nav nav { display: flex; gap: 22px; font-weight: 700; color: #475569; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 42px; padding: 0 18px; border-radius: 8px; background: #18b876; color: #fff; font-weight: 800; border: 0; }
.btn.dark { background: #0f172a; }
.hero { display: grid; grid-template-columns: 1fr .82fr; gap: 42px; align-items: center; padding: 64px 56px; }
.hero h1 { font-size: 58px; line-height: 1; margin: 12px 0 18px; letter-spacing: 0; }
.hero p { font-size: 18px; color: #5b6472; max-width: 650px; }
.eyebrow { color: #18b876; font-weight: 900; text-transform: uppercase; font-size: 13px; letter-spacing: .12em; }
.screen { border: 1px solid #dfe5ee; border-radius: 8px; background: #fff; box-shadow: 0 18px 48px rgba(15,23,42,.14); overflow: hidden; }
.screen-bar { height: 46px; background: #f8fafc; border-bottom: 1px solid #e5e7eb; display: flex; align-items: center; gap: 8px; padding-left: 18px; }
.dot { width: 11px; height: 11px; border-radius: 50%; background: #ef4444; }
.dot:nth-child(2) { background: #f59e0b; }
.dot:nth-child(3) { background: #18b876; }
.screen-body { padding: 24px; }
.cards { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; margin-top: 24px; }
.card { border: 1px solid #dfe5ee; border-radius: 8px; background: #fff; padding: 18px; }
.thumb { height: 120px; border-radius: 8px; background: linear-gradient(135deg,#18b876,#0ea5e9); margin-bottom: 14px; }
.muted { color: #64748b; }
.stats { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; margin-top: 20px; }
.stat { padding: 18px; border-radius: 8px; background: #fff; border: 1px solid #dfe5ee; }
.stat strong { display: block; font-size: 28px; color: #0f172a; }
.table { width: 100%; border-collapse: collapse; margin-top: 18px; background: #fff; }
.table th, .table td { padding: 12px; border-bottom: 1px solid #e5e7eb; text-align: left; }
.table th { color: #64748b; font-size: 12px; text-transform: uppercase; }
.split { display: grid; grid-template-columns: .7fr 1fr; gap: 24px; }
.sidebar { background: #0f172a; color: #fff; padding: 22px; border-radius: 8px; }
.sidebar div { padding: 12px; border-radius: 8px; margin-bottom: 8px; background: rgba(255,255,255,.08); }
.chart { height: 180px; display: flex; align-items: end; gap: 18px; padding: 20px; background: #f8fafc; border-radius: 8px; }
.bar { flex: 1; background: linear-gradient(180deg,#0ea5e9,#18b876); border-radius: 8px 8px 0 0; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
input, select { width: 100%; border: 1px solid #dfe5ee; border-radius: 8px; padding: 13px; font: inherit; }
.footer-strip { padding: 34px 56px; background: #0f172a; color: #dbeafe; display: flex; justify-content: space-between; align-items: center; }
.pill { display: inline-flex; padding: 7px 10px; border-radius: 999px; background: #dcfce7; color: #166534; font-weight: 800; font-size: 12px; }
@media (max-width: 800px) { .hero, .split { grid-template-columns: 1fr; } .cards, .stats { grid-template-columns: 1fr 1fr; } }