:root {
  color-scheme: dark;
  --bg: #010603;
  --panel: #041008;
  --line: #195c2c;
  --glow: #65ff76;
  --strong: #adffb3;
  --muted: #9cb3a1;
  --disabled: #697a6d;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Noto Sans JP", monospace;
  font-size: 17px;
  line-height: 1.8;
}

main {
  width: min(760px, calc(100% - 32px));
  margin: 32px auto 64px;
}

.hero,
.panel {
  border: 2px solid var(--line);
  border-radius: 20px;
  background: var(--panel);
  padding: clamp(22px, 5vw, 42px);
}

.panel { margin-top: 20px; }

.eyebrow,
h1,
h2,
a { color: var(--glow); }

.eyebrow { margin: 0 0 8px; font-weight: 700; }

h1 {
  margin: 0;
  color: var(--strong);
  font-size: clamp(2rem, 8vw, 3.5rem);
  line-height: 1.25;
}

h2 {
  margin: 0 0 8px;
  font-size: 1.3rem;
  line-height: 1.5;
}

p { margin: 0; }
p + p { margin-top: 12px; }

ul {
  margin: 8px 0 0;
  padding-left: 1.4em;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  margin-top: 24px;
}

a { text-underline-offset: 4px; }
a:focus-visible {
  outline: 3px solid var(--glow);
  outline-offset: 4px;
}

.updated { color: var(--disabled); font-size: 0.9rem; }

.contact-required {
  border-color: #ff7378;
  color: #ffb8bb;
}

@media (max-width: 420px) {
  body { font-size: 16px; }
  main { width: min(100% - 20px, 760px); margin-top: 10px; }
  .hero, .panel { border-radius: 16px; padding: 20px; }
}