:root {
  --bg: #0d1117;
  --panel: #161b22;
  --line: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #c9a227;
  --accent-hover: #dcb53a;
  --link: #79b8ff;
  --max: 720px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", sans-serif;
}
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: clamp(28px, 5vw, 40px); line-height: 1.15; margin: 8px 0 12px; }
h2 { font-size: 18px; margin: 0 0 10px; }
p { margin: 0 0 16px; }
.muted { color: var(--muted); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* Top bar */
.top {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px 16px;
  max-width: var(--max); margin: 0 auto; padding: 18px 20px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  color: var(--text); font-weight: 700; font-size: 18px; letter-spacing: 0.02em;
}
.brand img { width: 26px; height: 26px; }
.brand:hover { text-decoration: none; }
.top nav { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.top nav a { color: var(--muted); font-size: 15px; }
.top nav a:hover { color: var(--text); text-decoration: none; }
.top nav a.signin {
  color: #0d1117; background: var(--accent); font-weight: 600;
  padding: 7px 14px; border-radius: 6px;
}
.top nav a.signin:hover { background: var(--accent-hover); color: #0d1117; }

main, .content-left-aligned-text, .wrap {
  max-width: var(--max); margin: 0 auto; padding: 8px 20px 40px;
}

/* Panels and lists */
.panel {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 10px; padding: 18px 20px; margin: 0 0 16px;
}
.hero { text-align: center; padding: 28px 20px; }
.hero img { display: block; width: min(320px, 80%); margin: 0 auto; border: 1px solid var(--line); border-radius: 10px; }
ul.plain { list-style: none; padding: 0; margin: 0; }
ul.plain li { padding: 8px 0; border-bottom: 1px solid var(--line); }
ul.plain li:last-child { border-bottom: 0; padding-bottom: 0; }
ul.plain li:first-child { padding-top: 0; }
code { font: 14px ui-monospace, Menlo, Consolas, monospace; color: var(--accent); }

/* Gate, used only on the 404 page, kept static */
.gate {
  position: absolute; top: 0; bottom: 0; width: 50%; z-index: 0;
  background: repeating-linear-gradient(90deg, #2b313b 0 8px, transparent 8px 28px);
  pointer-events: none;
}
.gate.l { left: 0; border-right: 3px solid #3d434d; }
.gate.r { right: 0; border-left: 3px solid #3d434d; }
.gate-wrap { position: relative; overflow: hidden; border-radius: 10px; border: 1px solid var(--line); padding: 40px 20px; text-align: center; }
.still-content {
  position: relative; z-index: 1; display: inline-block;
  padding: 22px 28px; background: var(--bg);
  border: 1px solid var(--line); border-radius: 10px;
}

/* Forms */
form { margin: 0; }
form label { display: block; margin: 0 0 14px; color: var(--muted); font-size: 14px; }
input, textarea {
  display: block; width: 100%; margin-top: 6px; padding: 10px 12px;
  background: var(--bg); color: var(--text); border: 1px solid var(--line);
  border-radius: 6px; font: inherit;
}
textarea { min-height: 140px; resize: vertical; }
button {
  background: var(--accent); color: #0d1117; border: 0; border-radius: 6px;
  padding: 10px 16px; font: inherit; font-weight: 600; cursor: pointer;
}
button:hover { background: var(--accent-hover); }
.thanks { display: none; padding: 24px 0; font-size: 18px; }

/* Footer */
.foot {
  max-width: var(--max); margin: 0 auto; padding: 24px 20px 32px;
  border-top: 1px solid var(--line); color: var(--muted); font-size: 14px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px 16px;
}
.foot a { color: var(--muted); }
.foot a:hover { color: var(--text); }