body{font-family:system-ui,sans-serif;max-width:960px;margin:auto;padding:1rem;color:#1b1b1b;line-height:1.5}
nav a{margin-left:1rem}h1{font-size:2rem}.tiers{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1rem}
.tier{border:1px solid #ddd;border-radius:10px;padding:1rem}.feat{border:2px solid #4f46e5}.price{font-size:2rem;font-weight:700}
.btn{display:inline-block;background:#4f46e5;color:#fff;padding:.5rem 1rem;border-radius:6px;text-decoration:none}
.notice{background:#fff7e6;border-left:4px solid #f59e0b;padding:.5rem 1rem}.upsell{background:#eef2ff;padding:.5rem 1rem;border-radius:8px}
.ph{color:#b45309;font-style:italic}table{border-collapse:collapse;width:100%}td,th{border:1px solid #ddd;padding:.4rem;text-align:left}footer{margin-top:2rem;font-size:.85rem;color:#555}