:root { --bg: #03060d; --line: rgba(0,174,255,.30); --cyan: #00f0ff; --blue: #00d9ff; --red: #ff164f; --white: #eaf7ff; --muted: #71839a; }
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--white); font-family: Inter, system-ui, sans-serif; }
body { display: grid; place-items: center; min-height: 100dvh; padding: 16px;
  background: radial-gradient(50vw 50vh at 50% 45%, rgba(0,120,255,.14), transparent 70%), radial-gradient(30vw 30vh at 52% 55%, rgba(255,22,79,.08), transparent 70%),
    linear-gradient(rgba(0,174,255,.05) 1px, transparent 1px) 0 0/46px 46px, linear-gradient(90deg, rgba(0,174,255,.05) 1px, transparent 1px) 0 0/46px 46px, var(--bg); }
.gate-box { width: min(420px, 100%); padding: 30px 28px 22px; text-align: center; background: linear-gradient(180deg, rgba(10,22,40,.92), rgba(5,12,22,.92)); border: 1px solid var(--line);
  clip-path: polygon(14px 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%, 0 14px); box-shadow: 0 0 60px rgba(0,120,255,.18); }
.g-mark { width: 52px; fill: none; stroke: var(--blue); stroke-width: 1.8; filter: drop-shadow(0 0 8px rgba(0,217,255,.8)); }
.g-badge { margin: 12px 0 4px; font: 500 10.5px/1 "JetBrains Mono", monospace; letter-spacing: .24em; color: var(--blue); }
h1 { margin: 0 0 20px; font: 600 26px/1 Orbitron, monospace; letter-spacing: .18em; text-shadow: 0 0 14px rgba(0,200,255,.7); }
.g-step { display: flex; flex-direction: column; gap: 8px; text-align: left; }
label { margin-top: 6px; font: 500 10.5px/1 "JetBrains Mono", monospace; letter-spacing: .16em; color: var(--muted); }
input { width: 100%; padding: 12px 12px; background: rgba(3,8,18,.9); border: 1px solid var(--line); color: var(--white); font: 500 15px/1 Inter, sans-serif; outline: none; }
input:focus { border-color: var(--cyan); box-shadow: 0 0 0 1px var(--cyan), 0 0 16px rgba(0,240,255,.25); }
.g-code { text-align: center; font: 600 26px/1 "JetBrains Mono", monospace; letter-spacing: .3em; }
button { margin-top: 10px; padding: 12px; cursor: pointer; background: linear-gradient(90deg, rgba(0,175,255,.25), rgba(255,22,79,.18)); border: 1px solid var(--blue);
  color: var(--white); font: 600 12px/1 "JetBrains Mono", monospace; letter-spacing: .2em; }
button:hover { box-shadow: 0 0 20px rgba(0,217,255,.45); }
.g-link { background: none; border: 0; color: var(--muted); letter-spacing: .08em; margin-top: 2px; }
.g-lead { margin: 0 0 6px; font-size: 14px; line-height: 1.5; color: #cfe1f3; }
.g-qr { align-self: center; width: 230px; padding: 10px; background: #fff; border: 1px solid var(--line); }
.g-qr img { width: 100%; height: auto; display: block; image-rendering: pixelated; }
.g-manual { font-size: 12px; color: var(--muted); }
.g-manual summary { cursor: pointer; }
.g-manual code { display: block; margin: 8px 0 4px; padding: 8px; background: rgba(3,8,18,.9); border: 1px dashed var(--line); font: 500 14px/1.4 "JetBrains Mono", monospace; letter-spacing: .08em; color: var(--white); word-break: break-all; }
.g-note { margin: 8px 0 0; font-size: 11.5px; color: var(--muted); line-height: 1.5; }
.g-note code { color: var(--blue); }
.g-err { margin: 14px 0 0; padding: 9px; border: 1px solid rgba(255,22,79,.5); background: rgba(255,22,79,.08); color: #ff8aa5; font-size: 13px; }
.g-foot { margin: 18px 0 0; font: 400 10.5px/1.4 "JetBrains Mono", monospace; color: var(--muted); letter-spacing: .06em; }
.g-step[hidden], .g-err[hidden] { display: none !important; }