:root {
  color-scheme: dark;
  --black: #020602;
  --panel: #061006;
  --panel-2: #0a180a;
  --green: #39ff14;
  --green-soft: #88ff77;
  --green-dim: #1f8f18;
  --border: #1fc713;
  --shadow: rgba(57, 255, 20, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    linear-gradient(rgba(57, 255, 20, 0.03) 50%, rgba(0, 0, 0, 0.03) 50%),
    var(--black);
  background-size: 100% 4px;
  color: var(--green);
  font-family: "Courier New", Courier, monospace;
  letter-spacing: 0;
}

.terminal-shell {
  width: min(920px, calc(100% - 32px));
  margin: 32px auto;
  border: 2px solid var(--border);
  background: rgba(2, 6, 2, 0.94);
  box-shadow: 0 0 28px var(--shadow);
}

.terminal-header {
  display: flex;
  gap: 8px;
  align-items: center;
  min-height: 34px;
  padding: 8px 12px;
  border-bottom: 2px solid var(--border);
  background: var(--panel-2);
}

.terminal-header span {
  width: 12px;
  height: 12px;
  border: 1px solid var(--green);
  background: var(--black);
}

.intro,
.tool-list {
  padding: 24px;
}

.intro {
  border-bottom: 1px solid var(--green-dim);
}

.prompt {
  margin: 0 0 8px;
  color: var(--green-soft);
}

h1,
h2 {
  margin: 0;
  font-weight: 700;
  line-height: 1.1;
}

h1 {
  font-size: clamp(2rem, 6vw, 4.7rem);
}

h2 {
  margin-bottom: 18px;
  font-size: 1.35rem;
}

ul {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 0;
  list-style: none;
}

li {
  border: 1px solid var(--border);
  background: var(--panel);
  padding: 14px;
}

a {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--green);
  font-weight: 700;
  text-decoration: none;
  text-transform: uppercase;
}

a:hover,
a:focus-visible {
  background: var(--green);
  color: var(--black);
  outline: none;
}

li span {
  display: block;
  color: var(--green-soft);
  line-height: 1.45;
}

@media (max-width: 560px) {
  .terminal-shell {
    width: calc(100% - 18px);
    margin: 9px auto;
  }

  .intro,
  .tool-list {
    padding: 16px;
  }
}