:root{--bg:#0b0d12;--card:#12151d;--line:#1f2430;--txt:#e7e9ee;--mut:#8b93a7;--acc:#6d5efc;--acc2:#22d3ee}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--txt);line-height:1.6;min-height:100vh;overflow-x:hidden}
.glow{position:fixed;inset:-30vh -20vw auto auto;width:70vw;height:70vh;background:radial-gradient(closest-side,rgba(109,94,252,.28),transparent);filter:blur(40px);z-index:-1}
.glow.b{inset:auto auto -30vh -20vw;background:radial-gradient(closest-side,rgba(34,211,238,.18),transparent)}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}
nav{display:flex;align-items:center;justify-content:space-between;padding:28px 0}
.logo{display:flex;gap:10px;align-items:center;font-weight:700;letter-spacing:-.02em;font-size:18px;color:var(--txt);text-decoration:none}
.logo i{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--acc),var(--acc2));display:block}
nav a{color:var(--mut);text-decoration:none;margin-left:24px;font-size:14px}nav a:hover{color:var(--txt)}
nav a.logo{margin-left:0;color:var(--txt);font-size:18px}
.page{max-width:720px;margin:0 auto;padding:60px 0 90px}
.page h1{font-size:clamp(32px,5vw,48px);line-height:1.1;letter-spacing:-.03em;margin-bottom:14px}
.page h1 span{background:linear-gradient(90deg,var(--acc),var(--acc2));-webkit-background-clip:text;background-clip:text;color:transparent}
.page .lead{color:var(--mut);font-size:17px;margin-bottom:36px}
.page h2{font-size:19px;letter-spacing:-.01em;margin:32px 0 8px}
.page p,.page li{color:var(--mut);font-size:15.5px}
.page ul{padding-left:20px;margin-top:6px}.page li{margin:4px 0}
.page a{color:var(--acc2);text-decoration:none}.page a:hover{text-decoration:underline}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:26px;margin-top:22px}
label{display:block;font-size:13px;color:var(--mut);margin:14px 0 6px}
input,textarea{width:100%;background:#0e1118;border:1px solid var(--line);border-radius:10px;padding:11px 13px;color:var(--txt);font:inherit;font-size:15px}
input:focus,textarea:focus{outline:none;border-color:var(--acc)}
textarea{min-height:120px;resize:vertical}
.btn{display:inline-block;margin-top:18px;padding:12px 22px;border-radius:12px;background:var(--txt);color:#0b0d12;font-weight:600;text-decoration:none;font-size:15px;cursor:pointer;border:0}
.btn:hover{opacity:.9;text-decoration:none}
.err{text-align:center;padding:110px 0 120px}
.err .code{font-size:clamp(80px,14vw,150px);font-weight:800;letter-spacing:-.06em;line-height:1;background:linear-gradient(90deg,var(--acc),var(--acc2));-webkit-background-clip:text;background-clip:text;color:transparent}
.err h1{font-size:26px;margin:14px 0 8px;letter-spacing:-.02em}.err p{color:var(--mut);max-width:460px;margin:0 auto}
footer{border-top:1px solid var(--line);padding:28px 0 40px;color:var(--mut);font-size:13px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
footer a{color:inherit;text-decoration:none;margin-left:14px}footer a:hover{color:var(--txt)}
#toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%) translateY(120px);background:var(--card);border:1px solid var(--line);padding:12px 18px;border-radius:12px;font-size:14px;transition:.3s}
#toast.on{transform:translateX(-50%) translateY(0)}