:root {
  --ground: #07090c;
  --panel: #0e1216;
  --border: #56606f;
  --text: #c3ccd6;
  --label: #8b96a6;
  --hint: #737e8e;
  --cyan: #35e8d5;
}

* { box-sizing: border-box; }

html { background: var(--ground); }

body {
  margin: 0;
  background: var(--ground);
  color: var(--text);
  font: 16px/1.6 ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  -webkit-text-size-adjust: 100%;
}

main {
  max-width: 680px;
  margin: 0 auto;
  padding: 40px 16px 64px;
}

.mark {
  display: inline-block;
  color: #d6dde5;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-decoration: none;
  font-size: 15px;
}

nav { display: flex; gap: 20px; margin-top: 8px; font-size: 13px; letter-spacing: 0.08em; }
nav a { color: var(--label); text-decoration: none; }
nav a:hover, nav a[aria-current] { color: var(--cyan); }

h1 { font-size: 28px; font-weight: 500; margin: 48px 0 8px; color: #d6dde5; }
h2 {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--label);
  margin: 40px 0 8px;
}
p, li { color: var(--text); }
.lede { color: var(--label); margin-top: 0; }
.small { color: var(--hint); font-size: 13px; }
a { color: var(--cyan); }
ul { padding-left: 20px; }
li { margin: 6px 0; }

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  margin-top: 24px;
}

.readout {
  font-size: 56px;
  font-weight: 500;
  color: var(--cyan);
  text-shadow: 0 0 18px rgba(53, 232, 213, 0.45);
  letter-spacing: 0.04em;
  margin: 8px 0 0;
}

footer { margin-top: 64px; color: var(--hint); font-size: 13px; }
footer a { color: var(--label); }