*{box-sizing:border-box}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial}
.container{min-height:80vh;display:flex;align-items:center;justify-content:center;padding:16px;background:linear-gradient(#f8fafc,#ffffff)}
.card{width:100%;max-width:880px}
h1{font-size:28px;margin:0 0 8px 0} .sub{color:#64748b;font-size:12px}
.section{background:#fff;border:1px solid #e5e7eb;border-radius:16px;padding:16px;box-shadow:0 1px 3px rgba(0,0,0,.06)}
.row{display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.btn{border:1px solid #e5e7eb;border-radius:12px;padding:10px 14px;background:#fff;cursor:pointer;font-weight:600}
.btn.primary{background:#0f172a;color:#fff;border-color:#0f172a}
.btn:hover{background:#f8fafc}
.input{width:100%;border:1px solid #e5e7eb;border-radius:12px;padding:12px;font-family:ui-monospace,Menlo,monospace;letter-spacing:0.2em;text-transform:uppercase}
.grid{display:grid;gap:12px}
.label{font-size:12px;font-weight:600;margin-bottom:6px}
.small{font-size:12px;color:#64748b}
.box{width:48px;height:48px;border:1px solid #e5e7eb;border-radius:10px;display:flex;align-items:center;justify-content:center;font-weight:800;background:#fff}
.dot{width:14px;height:14px;border-radius:999px;border:1px solid #000}
.dot.red{background:#ef4444;border-color:#b91c1c}
.dot.green{background:#22c55e;border-color:#15803d}
.dot.black{background:#0a0a0a;border-color:#000}
.row-grid{display:grid;grid-template-columns:repeat(7, 48px);gap:10px;align-items:start;overflow-x:auto}
.center{text-align:center}
.badge{padding:4px 8px;border-radius:999px;border:1px solid #e5e7eb;background:#fff;font-weight:600}
.timer{font-family:ui-monospace,Menlo,monospace}
.banner{padding:14px;border:1px solid;border-radius:12px;font-weight:700}
.banner.win{background:#ecfdf5;border-color:#34d399;color:#065f46}
.banner.lose{background:#fef2f2;border-color:#fca5a5;color:#7f1d1d}
.help{margin-top:8px}
.help-toggle{cursor:pointer;text-decoration:underline}
.help-body{margin-top:8px;border:1px dashed #e5e7eb;border-radius:12px;padding:12px;background:#fcfcfc}
.disabled{opacity:.6;pointer-events:none}