*,
      *::before,
      *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
      }

      :root {
        --bg: #0d1117;
        --bg2: #161b22;
        --bg3: #1c2128;
        --border: #30363d;
        --green: #3fb950;
        --green-hi: #7ee787;
        --green-dim: #1a4a2a;
        --text: #e6edf3;
        --text-muted: #8b949e;
        --text-dim: #565f6b;
        --accent: #58a6ff;
        --amber: #e3b341;
        --red: #ff7b72;
        --font: "JetBrains Mono", "Fira Code", "Courier New", monospace;
      }

      html,
      body {
        height: 100%;
      }
      body {
        background:
          radial-gradient(
            ellipse 90% 60% at 50% 0%,
            rgba(63, 185, 80, 0.05),
            transparent 70%
          ),
          var(--bg);
        color: var(--text);
        font-family: var(--font);
        font-size: 14px;
        line-height: 1.65;
        -webkit-font-smoothing: antialiased;
      }

      a {
        color: var(--green);
        text-decoration: none;
        border-bottom: 1px dotted rgba(63, 185, 80, 0.4);
        transition:
          color 0.15s,
          border-color 0.15s;
      }
      a:hover {
        color: var(--green-hi);
        border-bottom-color: var(--green-hi);
      }
      ::selection {
        background: var(--green-dim);
        color: var(--green-hi);
      }

      ::-webkit-scrollbar {
        width: 8px;
      }
      ::-webkit-scrollbar-track {
        background: transparent;
      }
      ::-webkit-scrollbar-thumb {
        background: var(--green-dim);
        border-radius: 4px;
      }
      ::-webkit-scrollbar-thumb:hover {
        background: var(--green);
      }

      /* ─── Terminal window ─── */
      .screen {
        max-width: 960px;
        margin: 0 auto;
        min-height: 100vh;
        display: flex;
        flex-direction: column;
      }
      .titlebar {
        position: sticky;
        top: 0;
        z-index: 10;
        display: flex;
        align-items: center;
        gap: 8px;
        padding: 10px 16px;
        background: var(--bg3);
        border-bottom: 1px solid var(--border);
        backdrop-filter: blur(6px);
      }
      .dot {
        width: 12px;
        height: 12px;
        border-radius: 50%;
      }
      .dot.r {
        background: #ff5f56;
      }
      .dot.y {
        background: #ffbd2e;
      }
      .dot.g {
        background: #27c93f;
      }
      .titlebar .title {
        flex: 1;
        text-align: center;
        font-size: 12px;
        color: var(--text-muted);
      }
      .titlebar .status {
        font-size: 11px;
        color: var(--green);
        display: flex;
        align-items: center;
        gap: 6px;
      }
      .titlebar .status::before {
        content: "";
        width: 7px;
        height: 7px;
        border-radius: 50%;
        background: var(--green);
        box-shadow: 0 0 8px var(--green);
        animation: pulse 2s ease-in-out infinite;
      }
      @keyframes pulse {
        50% {
          opacity: 0.35;
        }
      }

      .terminal {
        flex: 1;
        padding: 22px clamp(16px, 4vw, 36px) 40px;
      }

      #output {
        white-space: pre-wrap;
        word-break: break-word;
      }
      #output > * {
        animation: fadeUp 0.18s ease both;
      }
      @keyframes fadeUp {
        from {
          opacity: 0;
          transform: translateY(3px);
        }
      }

      .line {
        margin: 1px 0;
      }
      .muted {
        color: var(--text-muted);
      }
      .dim {
        color: var(--text-dim);
      }
      .green {
        color: var(--green);
      }
      .hi {
        color: var(--green-hi);
      }
      .amber {
        color: var(--amber);
      }
      .red {
        color: var(--red);
      }
      .accent {
        color: var(--accent);
      }
      .bold {
        font-weight: 600;
      }
      .block {
        margin: 8px 0;
      }
      .indent {
        padding-left: 20px;
      }

      /* echoed command line */
      .echo {
        margin-top: 14px;
      }
      .ps1 {
        color: var(--green);
      }
      .ps1 .u {
        color: var(--green-hi);
      }
      .ps1 .p {
        color: var(--accent);
      }
      .echo .cmd {
        color: var(--text);
      }

      /* command list / tables */
      .kv {
        display: grid;
        grid-template-columns: minmax(120px, max-content) 1fr;
        gap: 2px 20px;
      }
      .kv .k {
        color: var(--green);
      }
      .kv .v {
        color: var(--text-muted);
      }

      .item {
        margin: 3px 0;
      }
      .item .name {
        color: var(--green-hi);
        font-weight: 600;
      }
      .item .tag {
        color: var(--text-dim);
      }
      .badge {
        display: inline-block;
        font-size: 11px;
        padding: 0 7px;
        border-radius: 99px;
        border: 1px solid rgba(63, 185, 80, 0.25);
        background: var(--green-dim);
        color: var(--green);
        margin-right: 4px;
      }
      .lang {
        color: var(--accent);
      }
      .banner {
        color: var(--green-hi);
        text-shadow: 0 0 18px rgba(63, 185, 80, 0.35);
        line-height: 1.1;
      }

      /* ─── Input line ─── */
      .input-line {
        display: flex;
        align-items: baseline;
        gap: 8px;
        margin-top: 14px;
      }
      .input-line .ps1 {
        flex-shrink: 0;
      }
      #cmd {
        flex: 1;
        min-width: 0;
        background: transparent;
        border: none;
        outline: none;
        color: var(--text);
        font-family: var(--font);
        font-size: 14px;
        caret-color: var(--green);
        padding: 0;
      }

      /* clickable command chips */
      .chips {
        position: sticky;
        bottom: 0;
        display: flex;
        flex-wrap: wrap;
        gap: 6px;
        padding: 12px clamp(16px, 4vw, 36px);
        background: linear-gradient(to top, var(--bg) 60%, transparent);
      }
      .chip {
        font-family: var(--font);
        font-size: 11px;
        cursor: pointer;
        padding: 4px 11px;
        border-radius: 99px;
        background: var(--bg2);
        color: var(--text-muted);
        border: 1px solid var(--border);
        transition: all 0.15s;
      }
      .chip:hover {
        border-color: var(--green);
        color: var(--green);
        background: var(--bg3);
      }
      .chip .d {
        color: var(--text-dim);
      }
      .bottom_links {
        text-align: center;
      }

      @media (max-width: 560px) {
        body {
          font-size: 13px;
        }
        .banner {
          font-size: 9px;
        }
      }