:root{
  --bg1:#0d6efd;
  --bg2:#7ecbff;
  --ink:#0b1633;
  --white:#fff;
  --btn:#2f5fe6;
  --btn2:#4b7bff;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:linear-gradient(160deg,var(--bg1),var(--bg2));font-family:Inter,system-ui,Segoe UI,Roboto,Arial,sans-serif;color:var(--white)}
/* Если хочешь фон-картинку на всю страницу: раскомментируй и положи webapp/images/bg.jpg
body{background:url('images/bg.jpg') no-repeat center center fixed;background-size:cover;}
*/
header{padding:16px 12px;text-align:center}
header .logo{position:fixed;top:16px;left:50%;transform:translateX(-50%);z-index:1000;width:160px;border-radius:12px;box-shadow:0 8px 24px rgba(0,0,0,.25)}
.currency-strip{margin:96px auto 0;display:inline-flex;gap:12px;align-items:center;background:rgba(255,255,255,.9);color:#111;padding:6px 12px;border-radius:999px;font-weight:800}
.currency-strip img{height:18px;vertical-align:middle}
main{max-width:640px;margin:0 auto;padding:16px}
h2{margin:18px 0 12px}
label{display:block;margin:10px 0 6px;font-weight:700}
select,input,textarea{width:100%;padding:12px 14px;border:0;border-radius:12px;background:rgba(255,255,255,.92);color:#111}
button{width:100%;padding:12px 16px;border:0;border-radius:12px;background:linear-gradient(145deg,var(--btn),var(--btn2));color:#fff;font-weight:800;margin-top:12px;cursor:pointer}
.btn-ghost{background:rgba(255,255,255,.15);border:2px solid rgba(255,255,255,.6);color:#fff}
#rubcnyModeBox{gap:10px}
.result{margin-top:12px;background:rgba(255,255,255,.88);color:#111;border-radius:12px;padding:12px;font-weight:700}
footer{padding:16px;text-align:center}
footer a{color:#fff;margin:0 10px;text-decoration:none;font-weight:700}
.table{width:100%;border-collapse:separate;border-spacing:0 10px}
.table th{color:#eef;text-align:left}
.table td{background:rgba(255,255,255,.92);color:#111;padding:10px;border-radius:10px}