*{box-sizing:border-box}html,body{margin:0;font-family:'Tahoma',system-ui,Arial;line-height:1.6;background:#fafafa;color:#111}
header{padding:20px;background:#111;color:#fff}header h1{margin:0 0 6px}.sub{opacity:.85}
main{padding:18px;max-width:1100px;margin:auto}
section{background:#fff;padding:16px;border-radius:14px;box-shadow:0 2px 8px rgba(0,0,0,.06);margin:14px 0}
h2{margin:0 0 10px}
label{display:flex;flex-direction:column;gap:6px;font-weight:600}
input,select,textarea{padding:10px;border:1px solid #ddd;border-radius:10px}
button{padding:10px 14px;border:0;border-radius:10px;background:#111;color:#fff;cursor:pointer}
button:hover{opacity:.9}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
#stepper{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}
.step-chip{padding:6px 10px;border-radius:999px;border:1px solid #ddd;background:#fff}
.step-chip.active{background:#111;color:#fff;border-color:#111}
.muted{opacity:.7;font-size:.9em}
.totals{display:flex;gap:20px;flex-wrap:wrap;background:#f3f3f3;border-radius:10px;padding:10px;margin-top:6px}
table{width:100%;border-collapse:collapse}th,td{border-bottom:1px solid #eee;padding:8px}td input{width:100%}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px}
.card{background:#f7f7f7;border:1px solid #eee;border-radius:12px;padding:12px}.card .k{opacity:.7}.card .v{font-weight:700;font-size:1.2em}
.nav-buttons{display:flex;justify-content:space-between;gap:10px;position:sticky;bottom:0;background:#fff;padding:10px;border-top:1px solid #eee;border-radius:12px}
.tax-box{border:1px dashed #ddd;border-radius:12px;padding:12px;margin-top:8px}
.hidden{display:none}
.actions{display:flex;gap:10px}