:root{color-scheme:dark;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:#090b11;color:#f5f7fb}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at 20% 0,#222945 0,transparent 38%),#090b11}main{max-width:920px;margin:0 auto;padding:48px 20px}.card{background:#111521;border:1px solid #2a3042;border-radius:22px;padding:34px;box-shadow:0 24px 80px rgba(0,0,0,.35)}.brand{font-weight:900;letter-spacing:.08em;color:#fff;margin-bottom:28px}.brand span{color:#8d67ff}h1{font-size:clamp(2rem,5vw,3rem);margin:.1em 0 .35em}.lead{color:#c5cada;font-size:1.05rem;line-height:1.6}.button,button{display:inline-block;border:0;border-radius:12px;background:#7c5cff;color:#fff;padding:12px 18px;font-weight:800;text-decoration:none;cursor:pointer}table{width:100%;border-collapse:collapse;margin:24px 0}th,td{padding:12px;border-bottom:1px solid #2b3142;text-align:left}.ok{color:#7ee7a8}.bad{color:#ff8f9f}.alert,.warning{padding:14px 16px;border-radius:12px;margin:18px 0}.alert{background:#3a1820;border:1px solid #7a2d3c}.warning{background:#302912;border:1px solid #66551a}fieldset{border:1px solid #2c3348;border-radius:15px;padding:18px;margin:20px 0}legend{padding:0 8px;font-weight:800}label{display:block;margin:12px 0;color:#d8dceb}input,select{display:block;width:100%;margin-top:7px;padding:11px 12px;border-radius:10px;border:1px solid #3a4259;background:#0b0f18;color:#fff}input[aria-invalid="true"]{border-color:#ff8f9f;box-shadow:0 0 0 1px #ff8f9f}.field-error{display:block;margin-top:7px;color:#ffb0bc;font-size:.9rem;line-height:1.4}.check{display:flex;gap:10px;align-items:center}.check input{width:auto;margin:0}.hint{color:#9ca6bd;font-size:.92rem;line-height:1.5}code{background:#0a0d14;padding:.15em .4em;border-radius:5px}ul{line-height:1.75}@media(max-width:600px){main{padding:20px 12px}.card{padding:22px}}