/* The landing page (index.html). */
html { background: var(--bg); }
body {
  line-height: 1.5;
  background:
    radial-gradient(900px 500px at 50% -10%, rgba(78, 161, 255, 0.10), transparent 70%),
    var(--bg);
  min-height: 100vh;
  padding: 40px 20px 56px;
}
main { max-width: 760px; margin: 0 auto; }

header { text-align: center; margin-bottom: 32px; }
h1 { font-size: 40px; font-weight: 700; letter-spacing: -0.02em; }
header .tag { color: var(--text-dim); font-size: 14px; margin-top: 6px; }
header .blurb { font-size: 14px; margin: 16px auto 0; max-width: 560px; color: var(--text); }

.launch {
  display: inline-block; margin-top: 24px; text-decoration: none;
  background: var(--accent); color: #04121f; font-weight: 700; font-size: 15px;
  padding: 12px 26px; border-radius: 9px;
  box-shadow: 0 6px 20px rgba(78, 161, 255, 0.25);
}
.launch:hover { background: #6cb2ff; }
.req { font-size: 12px; color: var(--text-dim); margin-top: 12px; }

section {
  background: var(--panel); border: 1px solid var(--panel-border);
  border-radius: 10px; padding: 18px 20px; margin-top: 16px;
}
h2 {
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--text-dim); font-weight: 700; margin-bottom: 12px;
}
section p { font-size: 13px; }
section p + p { margin-top: 8px; }
.note { font-size: 12px; color: var(--text-dim); margin-top: 12px; }

/* key / control rows */
.keys { display: grid; grid-template-columns: max-content 1fr; gap: 8px 16px; align-items: baseline; }
.keys dt { text-align: right; white-space: nowrap; }
.keys dd { font-size: 13px; }
.keys dd .sub { color: var(--text-dim); }

.kbd {
  display: inline-block; font-size: 11px; border-bottom-width: 2px;
  border-radius: 4px; padding: 2px 6px; line-height: 1.3;
}
.keys.scope .kbd { color: var(--scope); }
.sep { color: var(--text-dim); font-size: 11px; padding: 0 1px; }

ul { list-style: none; }
li { font-size: 13px; padding: 5px 0 5px 16px; position: relative; }
li::before { content: "→"; position: absolute; left: 0; color: var(--accent); font-size: 11px; top: 6px; }
li b { color: #fff; font-weight: 600; }

.steer { border-left: 2px solid rgba(158, 255, 196, 0.4); padding-left: 12px; margin-top: 14px;
  font-size: 13px; color: var(--text); }

footer { text-align: center; margin-top: 28px; font-size: 12px; color: var(--text-dim); }
footer a { color: var(--accent); }

@media (max-width: 560px) {
  body { padding: 28px 14px 40px; }
  h1 { font-size: 32px; }
  .keys { grid-template-columns: 1fr; gap: 2px 0; }
  .keys dt { text-align: left; margin-top: 10px; }
  .keys dt:first-child { margin-top: 0; }
}