:root{--bg:#0a0c10;--panel:rgba(18,22,30,.82);--line:rgba(255,255,255,.14);--cy:#6ee7f0;--gold:#e6cf8a;--ink:#eef1f5;--muted:#8d97a6}
*{box-sizing:border-box;margin:0;padding:0}
body{min-height:100vh;color:var(--ink);font:400 16px/1.6 'Jost',system-ui,sans-serif;
background:radial-gradient(ellipse 80% 50% at 50% 105%,rgba(110,231,240,.18),transparent 70%),linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px) 0 0/48px 48px,linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px) 0 0/48px 48px,var(--bg);background-attachment:fixed}
a{color:inherit;text-decoration:none}
.banner{padding:9px 16px;text-align:center;background:rgba(0,0,0,.35);border-bottom:1px solid var(--line);color:var(--cy);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase}
.wrap{max-width:460px;margin:0 auto;padding:40px 18px 36px}
.head{text-align:center;margin-bottom:24px}
.emblem{position:relative;width:104px;height:104px;margin:0 auto 22px;display:grid;place-items:center}
.emblem::before{content:"";position:absolute;inset:-14px;border-radius:50%;background:repeating-radial-gradient(circle,transparent 0 10px,rgba(110,231,240,.35) 10px 11px);-webkit-mask:radial-gradient(circle,#000 40%,transparent 70%);mask:radial-gradient(circle,#000 40%,transparent 70%)}
.emblem::after{content:"";position:absolute;width:58px;height:58px;transform:rotate(45deg);border:1px solid var(--gold);background:var(--bg)}
.emblem span{position:relative;z-index:1;font-weight:500;font-size:1.1rem;letter-spacing:.12em;color:var(--gold)}
@media (prefers-reduced-motion:no-preference){.emblem::before{animation:ripple 3s ease-in-out infinite alternate}}
@keyframes ripple{from{transform:scale(.9);opacity:.55}to{transform:scale(1.12);opacity:1}}
.head h1{font-weight:500;font-size:1.55rem;line-height:1.3;text-transform:uppercase;letter-spacing:.16em;margin-bottom:10px}
.head p{color:var(--muted);font-weight:300}
.tabs{display:grid;grid-template-columns:repeat(3,1fr);margin-bottom:22px}
.tabs a{padding:10px 2px;text-align:center;border-bottom:1px solid var(--line);color:var(--muted);font-size:.78rem;text-transform:uppercase;letter-spacing:.1em;transition:color .2s}
.tabs a:hover{color:var(--ink)}
.tabs a[aria-current]{color:var(--cy);border-bottom-color:var(--cy);box-shadow:0 1px 0 var(--cy)}
.card{position:relative;padding:26px 22px;background:var(--panel);border:1px solid var(--line);backdrop-filter:blur(6px)}
.card::before,.card::after{content:"";position:absolute;width:16px;height:16px;border:0 solid var(--cy);pointer-events:none}
.card::before{top:-1px;left:-1px;border-width:1px 0 0 1px}
.card::after{bottom:-1px;right:-1px;border-width:0 1px 1px 0}
.field{margin-bottom:16px}
label{display:block;margin-bottom:6px;color:var(--muted);font-size:.8rem;text-transform:uppercase;letter-spacing:.12em}
label::before{content:"";display:inline-block;width:5px;height:5px;margin-right:8px;background:var(--cy);transform:rotate(45deg);vertical-align:middle}
input{width:100%;padding:11px 12px;background:rgba(0,0,0,.35);color:var(--ink);border:1px solid var(--line);border-radius:0;font:inherit;-moz-appearance:textfield}
input::-webkit-outer-spin-button,input::-webkit-inner-spin-button{-webkit-appearance:none}
input::placeholder{color:#566072}
input:focus{outline:none;border-color:var(--cy);box-shadow:0 0 14px rgba(110,231,240,.25)}
.btn:focus-visible,.tabs a:focus-visible{outline:1px solid var(--cy);outline-offset:3px}
.btn{width:100%;margin-top:8px;padding:13px;border:0;cursor:pointer;background:linear-gradient(135deg,#f4ecd0,#d8c78c);color:#14110a;font:500 .95rem 'Jost',sans-serif;text-transform:uppercase;letter-spacing:.2em;clip-path:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,12px 100%,0 calc(100% - 12px));transition:filter .2s}
.btn:hover{filter:brightness(1.08)}
.result{margin-top:20px;text-align:center;font-weight:300}
.result:not(:empty){padding-top:16px;border-top:1px solid var(--line)}
.result b{font-weight:500;font-size:1.7rem;color:var(--gold);text-shadow:0 0 16px rgba(230,207,138,.35)}
.foot{margin-top:30px;text-align:center;color:var(--muted);font-size:.8rem;letter-spacing:.06em}
.foot small{display:block;margin-top:2px;opacity:.7}