:root{--bg:#0b1220;--card:rgba(255,255,255,.06);--border:rgba(255,255,255,.12);--text:rgba(255,255,255,.92);--muted:rgba(255,255,255,.68);--accent1:#00b8c4;--accent2:#39d353}*{box-sizing:border-box}html,body{margin:0;padding:0;height:100%}body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial;background:radial-gradient(1200px 600px at 20% 10%,rgba(0,184,196,.25),transparent 60%),radial-gradient(1000px 500px at 70% 20%,rgba(57,211,83,.18),transparent 55%),var(--bg);color:var(--text)}a{color:var(--text);text-decoration:none;opacity:.9}a:hover{opacity:1;text-decoration:underline}.app{min-height:100vh}.container{max-width:980px;margin:18px auto;padding:0 14px}.nav{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--border);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#0a12208c;position:sticky;top:0}.brand{display:flex;gap:10px;align-items:baseline;font-weight:800;letter-spacing:.2px}.brandMark{background:linear-gradient(90deg,var(--accent1),#4ea1ff);-webkit-background-clip:text;background-clip:text;color:transparent;font-size:18px}.brandSub{background:linear-gradient(90deg,var(--accent2),var(--accent1));-webkit-background-clip:text;background-clip:text;color:transparent;font-style:italic;font-weight:700}.navLinks{display:flex;align-items:center;gap:12px}.card{border:1px solid var(--border);background:var(--card);border-radius:16px;padding:18px;box-shadow:0 10px 40px #00000040}.hint{color:var(--muted);margin-top:10px}.btn{border:1px solid rgba(255,255,255,.18);background:#ffffff12;color:var(--text);padding:8px 12px;border-radius:12px;cursor:pointer}.btn:hover{background:#ffffff1a}.btn.wide{width:100%;padding:10px 12px}.form{display:grid;gap:12px;margin-top:10px}label{display:grid;gap:6px;color:var(--muted);font-size:14px}input{padding:10px 12px;border-radius:12px;border:1px solid rgba(255,255,255,.16);background:#0003;color:var(--text);outline:none}input:focus{border-color:#00b8c48c}.grid{margin-top:14px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.tile{border:1px solid rgba(255,255,255,.12);border-radius:14px;padding:16px;background:#00000029}