*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background:#f5f5f7;color:#1d1d1f;min-height:100vh;display:flex;flex-direction:column}
nav{background:#fff;border-bottom:1px solid #d1d1d6;padding:14px 24px;display:flex;justify-content:space-between;align-items:center}
nav .brand{font-weight:700;letter-spacing:.5px;text-transform:uppercase;color:#1d1d1f;text-decoration:none}
nav a{color:#515154;text-decoration:none;margin-left:20px;font-size:.95rem}nav a:hover{color:#0071e3}
main{flex:1;display:flex;justify-content:center;align-items:center;padding:24px}
.card{background:#fff;padding:40px 30px;border-radius:12px;box-shadow:0 4px 12px rgba(0,0,0,.08);width:100%;max-width:500px;text-align:center}
h1{font-size:1.6rem;font-weight:600;margin-bottom:12px}
p{color:#515154;font-size:.95rem;line-height:1.5;margin-bottom:20px}
a{color:#0071e3}
input,textarea{width:100%;padding:12px;border:1px solid #d1d1d6;border-radius:8px;font:inherit;margin-bottom:12px;outline:none}
input:focus,textarea:focus{border-color:#0071e3}
.btn{display:inline-block;background:#0071e3;color:#fff;border:none;padding:12px 24px;border-radius:8px;font-size:.95rem;font-weight:500;cursor:pointer;text-decoration:none;width:100%}
.btn:hover{background:#0077ed}.btn.dark{background:#1d1d1f}
.msg{padding:10px;border-radius:8px;font-size:.85rem;margin-bottom:12px;display:none}
.msg.err{background:#fde8e8;color:#b42318;display:block}.msg.ok{background:#e6f6ec;color:#05603a;display:block}
footer{text-align:center;font-size:.8rem;color:#86868b;padding:18px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px;max-width:1000px;width:100%}
.plan{background:#fff;border-radius:12px;box-shadow:0 4px 12px rgba(0,0,0,.08);padding:24px;text-align:left;display:flex;flex-direction:column;justify-content:space-between}
.plan.pop{border:2px solid #0071e3}.plan h2{font-size:1.2rem;margin-bottom:6px}
.plan .price{font-size:2rem;font-weight:700;margin:10px 0}.plan .price small{font-size:.85rem;color:#86868b;font-weight:400}
.plan ul{list-style:none;font-size:.85rem;color:#515154;margin:12px 0 18px}.plan li{margin-bottom:6px}.plan li:before{content:"✓ ";color:#0071e3}
.tabs{display:flex;margin-bottom:18px;border-bottom:1px solid #d1d1d6}
.tabs button{flex:1;background:none;border:none;border-bottom:2px solid transparent;padding:10px;font:inherit;cursor:pointer;color:#86868b}
.tabs button.on{color:#0071e3;border-color:#0071e3;font-weight:600}
.stars{display:flex;justify-content:center;gap:8px;margin-bottom:16px}
.star-btn{background:none;border:none;font-size:2rem;cursor:pointer;color:#d1d1d6}.star-btn.selected{color:#ffcc00}
.hidden{display:none}