:root {
  --bg: #07090b;
  --bg-2: #0d1116;
  --line: #1b232c;
  --ink: #e6edf3;
  --ink-dim: #7d8b99;
  --cy: #4dd8ff;
  --ok: #5ef2a0;
  --err: #ff6b5b;
  --mono: ui-monospace, SFMono-Regular, "JetBrains Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.6;
}

a { color: var(--cy); text-decoration: none; }
a:hover { text-decoration: underline; }

.top {
  display: flex; align-items: center; gap: 14px;
  padding: 18px 26px; border-bottom: 1px solid var(--line);
}
.brand { font-weight: 600; letter-spacing: 2px; }
.mark { color: var(--cy); }
.tag {
  font-size: 10.5px; letter-spacing: 1.5px; text-transform: uppercase;
  border: 1px solid var(--line); border-radius: 50px; padding: 3px 10px; color: var(--ink-dim);
}
.spacer { flex: 1; }
.muted { color: var(--ink-dim); }
.small { font-size: 12px; }

main {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 1px; background: var(--line); min-height: calc(100vh - 118px);
}
.pane { background: var(--bg); padding: 34px 30px; min-width: 0; }

.kicker { font-size: 10.5px; letter-spacing: 3px; text-transform: uppercase; color: var(--cy); margin: 0 0 12px; }
h1 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); line-height: 1.25; margin: 0 0 18px; font-weight: 600; }
.lede { color: var(--ink-dim); max-width: 54ch; margin: 0 0 30px; }

.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.step {
  display: flex; gap: 16px; padding: 20px; border: 1px solid var(--line);
  border-radius: 8px; background: var(--bg-2); opacity: .45; transition: opacity .3s, border-color .3s;
}
.step.on { opacity: 1; border-color: #2b3a49; }
.step.done { opacity: 1; }
.step.done .n { background: var(--ok); color: #062; border-color: var(--ok); }
.step .n {
  flex: 0 0 26px; height: 26px; border: 1px solid var(--line); border-radius: 50%;
  display: grid; place-items: center; font-size: 12px; color: var(--ink-dim);
}
.step b { display: block; margin-bottom: 4px; }
.step p { margin: 0 0 14px; color: var(--ink-dim); font-size: 13px; }
.step > div { min-width: 0; flex: 1; }

.row { display: flex; gap: 10px; flex-wrap: wrap; }

.btn {
  font-family: var(--mono); font-size: 13px; padding: 10px 18px; border-radius: 50px;
  border: 1px solid var(--cy); background: var(--cy); color: #04222c; cursor: pointer;
  transition: background .25s, color .25s;
}
.btn:hover:not(:disabled) { background: transparent; color: var(--cy); }
.btn:disabled { opacity: .4; cursor: default; }
.btn.ghost { background: transparent; border-color: var(--line); color: var(--ink); }
.btn.ghost:hover:not(:disabled) { border-color: var(--cy); color: var(--cy); }
.lnk { background: none; border: 0; color: var(--ink-dim); font: inherit; cursor: pointer; }
.lnk:hover { color: var(--cy); }

.who { display: block; margin-top: 10px; font-size: 12px; color: var(--ink-dim); }

.result {
  margin-top: 22px; padding: 22px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--bg-2);
}
.result.ok { border-color: var(--ok); background: rgba(94, 242, 160, .06); }
.result.no { border-color: var(--err); background: rgba(255, 107, 91, .06); }
.result .big { display: block; font-size: 1.15rem; margin-bottom: 6px; }
.result.ok .big { color: var(--ok); }
.result.no .big { color: var(--err); }
.result .why { color: var(--ink-dim); font-size: 13px; }

.cheat { margin-top: 22px; padding: 22px; border: 1px dashed var(--line); border-radius: 8px; }
.cheat p { color: var(--ink-dim); font-size: 13px; max-width: 56ch; }

.console { background: #050709; }
.chead { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.chead span { font-size: 10.5px; letter-spacing: 3px; text-transform: uppercase; color: var(--ink-dim); }
.log { margin-top: 18px; display: grid; gap: 12px; }

.call { border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.call .hd {
  display: flex; gap: 10px; align-items: baseline; flex-wrap: wrap;
  padding: 10px 12px; background: var(--bg-2); font-size: 12px;
}
.call .m { color: var(--cy); font-weight: 600; }
.call .u { color: var(--ink); word-break: break-all; flex: 1; min-width: 0; }
.call .st { color: var(--ok); }
.call .st.bad { color: var(--err); }
.call .ms { color: var(--ink-dim); }
.call .hop {
  display: block; width: 100%; font-size: 10.5px; letter-spacing: 1.5px;
  text-transform: uppercase; color: var(--ink-dim);
}
.call pre {
  margin: 0; padding: 12px; font-size: 11.5px; line-height: 1.55; color: var(--ink-dim);
  white-space: pre-wrap; word-break: break-word; border-top: 1px solid var(--line);
}
.call pre b { color: var(--ink); font-weight: 500; }

.absent { margin-top: 4px; color: var(--ink-dim); font-size: 11.5px; }
.absent b { color: var(--ok); }

footer {
  display: flex; gap: 22px; flex-wrap: wrap; padding: 20px 26px;
  border-top: 1px solid var(--line); font-size: 12px; color: var(--ink-dim);
}

@media (max-width: 900px) {
  main { grid-template-columns: 1fr; }
  .pane { padding: 26px 20px; }
}