.twz-container{ min-height:60vh; display:flex; align-items:center; justify-content:center; padding:16px; background:linear-gradient(135deg,#f8fafc,#eef2f7); }
.twz-card{ width:100%; max-width:720px; background:#fff; border-radius:14px; box-shadow:0 10px 25px rgba(0,0,0,.06); padding:24px; }
.twz-fade{ opacity:0; transform:translateY(6px); transition:opacity .35s ease, transform .35s ease; }
.twz-fade.twz-fade-in{ opacity:1; transform:translateY(0); }
.twz-title{ font-size:20px; font-weight:600; color:#0f172a; margin:0 0 14px; }
.twz-grid{ display:grid; grid-template-columns:1fr; gap:12px; }
/* fixed two-column layout for multi-option steps */
.twz-grid-fixed-2{ grid-template-columns:repeat(2,minmax(0,1fr)); }
@media(max-width:520px){
  .twz-grid-fixed-2{ grid-template-columns:1fr; }
}
.twz-btn{ border-radius:14px; border:1px solid #e2e8f0; background:#fff; color:#334155; padding:10px 14px; text-align:left; cursor:pointer; box-shadow:0 1px 2px rgba(0,0,0,.03); transition:box-shadow .2s, transform .02s; }
.twz-btn:hover{ box-shadow:0 6px 16px rgba(0,0,0,.07); }
.twz-btn:active{ transform:translateY(1px); }
.twz-btn-primary{ background:#dc2626; color:#fff; border-color:#dc2626; text-align:center; }
.twz-actions .twz-btn-primary, .twz-row .twz-btn-primary{ background:#dc2626; border-color:#dc2626; color:#fff; }
.twz-btn-selected{ background:#0f172a; color:#fff; border-color:#0f172a; }
.twz-btn-ghost{ background:#fff; }
.twz-actions, .twz-row{ display:flex; justify-content:space-between; align-items:center; gap:12px; margin-top:10px; }
.twz-input{ width:100%; border:1px solid #cbd5e1; border-radius:14px; padding:12px 14px; font-size:16px; outline:none; }
.twz-input:focus{ box-shadow:0 0 0 3px rgba(220,38,38,.15); border-color:#dc2626; }
.twz-field label{ display:block; font-size:13px; color:#475569; margin-bottom:6px; }
.twz-error{ color:#dc2626; font-size:14px; margin-top:8px; }
.twz-help{ color:#64748b; font-size:12px; margin-top:6px; }
.twz-hint{ color:#334155; font-size:14px; margin-top:4px; }
.twz-center{ display:flex; flex-direction:column; align-items:center; justify-content:center; gap:10px; }
.twz-dumbbell{ width:72px; height:36px; position:relative; animation: twz-tilt 1.4s ease-in-out infinite; }
.twz-dumbbell::before, .twz-dumbbell::after{ content:""; position:absolute; top:50%; left:50%; width:28px; height:4px; background:#0f172a; transform:translate(-50%,-50%); border-radius:2px; }
.twz-dumbbell::after{ width:6px; height:16px; box-shadow:-18px -3px 0 0 #0b1220, 18px -3px 0 0 #0b1220, -24px 0 0 0 #334155, 24px 0 0 0 #334155; background:transparent; }
@keyframes twz-tilt{ 0%{ transform:rotate(0deg);} 25%{ transform:rotate(20deg);} 75%{ transform:rotate(-20deg);} 100%{ transform:rotate(0deg);} }
.twz-loading-text{ color:#0f172a; font-size:16px; text-align:center; }