:root{color-scheme:light;--ink:#172033;--muted:#60708a;--line:#dbe2ec;--accent:#4f46e5;--accent-dark:#3730a3;--surface:#fff;--bg:#f4f6fa;--error:#b42318;--ok:#087443;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink)}
.first-run{min-height:100vh;display:grid;place-items:center;padding:24px}.first-run-card{width:min(760px,100%);background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:clamp(24px,5vw,48px);box-shadow:0 20px 55px rgba(23,32,51,.09)}
.first-run-head{display:flex;align-items:center;justify-content:space-between;gap:16px}.brand{font-weight:800;letter-spacing:.08em}.mark{color:var(--accent)}
.lang{display:flex;gap:4px}.lang button{border:1px solid var(--line);background:#fff;border-radius:8px;padding:7px 10px;cursor:pointer}.lang button[aria-pressed="true"]{background:var(--ink);color:#fff}
h1{font-size:clamp(27px,5vw,42px);line-height:1.08;margin:30px 0 10px}.lead{color:var(--muted);line-height:1.55;margin:0 0 28px;max-width:62ch}
form{display:grid;gap:20px}.section{border:0;padding:0;margin:8px 0;display:grid;gap:16px}.section legend{font-weight:750;font-size:18px;padding:0;margin-bottom:4px}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
label{display:grid;gap:7px;font-weight:650;font-size:14px}input,select{width:100%;min-height:46px;border:1px solid #b9c4d4;border-radius:10px;padding:10px 12px;background:#fff;color:var(--ink);font:inherit}input:focus,select:focus,button:focus-visible{outline:3px solid rgba(79,70,229,.25);outline-offset:2px;border-color:var(--accent)}
.hint,.preview{font-size:13px;color:var(--muted);line-height:1.45}.preview{background:#f7f8fc;border:1px solid var(--line);border-radius:10px;padding:12px;margin:0;white-space:pre-wrap}
.actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.primary{border:0;border-radius:10px;background:var(--accent);color:#fff;min-height:48px;padding:11px 20px;font-weight:750;font-size:15px;cursor:pointer}.primary:hover{background:var(--accent-dark)}.primary:disabled{opacity:.55;cursor:wait}
.message{min-height:22px;margin:0;font-size:14px}.message.error{color:var(--error)}.message.success{color:var(--ok)}
.steps{display:flex;gap:8px;margin:22px 0 30px}.steps span{height:5px;flex:1;background:#e5e9f1;border-radius:9px}.steps span.active{background:var(--accent)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:640px){.first-run{padding:0}.first-run-card{min-height:100vh;border:0;border-radius:0;padding:24px 18px}.grid{grid-template-columns:1fr}.actions .primary{width:100%}}