:root {
        --pixelfont: "Press Start 2P", system-ui;
        --transeas: 100ms ease;
        --maincolor: #ff55ff;
        --boxcolor: #211e19;
        --bluecolor: yellowgreen;
        --mainbg: #241c14;
        --text: #f9f4e9;
        --muted: #b9a896;
        --danger: #ff4b81;
        --success: #4cffb3;
      }

      .rules-body {
        box-sizing: border-box;
      }

      /* html, */
      .rules-body {
        margin: 0;
        padding: 0;
        /* background: radial-gradient(
          circle at top,
          #3b241a 0,
          var(--mainbg) 55%,
          #15100c 100%
        );
        color: var(--text);
        font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
          sans-serif; */
      }

      .rules-body {
        min-height: 100vh;
        display: flex;
        justify-content: center;
      }

      .page {
        width: 100%;
        max-width: 980px;
        padding: 2.5rem 1.25rem 3.5rem;
      }

      .header-rules {
        text-align: center;
        margin-bottom: 2.5rem;
      }

      .header-rules h1 {
        font-family: var(--pixelfont);
        font-size: clamp(1.6rem, 2.2vw, 2rem);
        letter-spacing: 0.08em;
        text-transform: uppercase;
        color: var(--maincolor);
        text-shadow: 0 0 8px rgba(255, 85, 255, 0.38);
        margin: 0 0 0.75rem;
      }

      .header-rules .subtitle {
        font-size: 0.95rem;
        color: var(--muted);
        max-width: 32rem;
        margin: 0 auto 1.5rem;
        font-family: Arial, Helvetica, sans-serif;
      }

      .tagline-pill {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        padding: 0.45rem 0.85rem;
        border-radius: 999px;
        border: 1px solid rgba(255, 255, 255, 0.2);
        background: rgba(0, 0, 0, 0.45);
        font-size: 0.72rem;
        text-transform: uppercase;
        letter-spacing: 0.14em;
        color: var(--muted);
      }

      .tagline-pill span.key {
        color: red;
      }

      .rules-intro {
        margin-bottom: 1.75rem;
        font-size: 0.9rem;
        color: var(--muted);
        text-align: center;
        font-family: Arial, Helvetica, sans-serif;
      }

      .rules-intro strong {
        color: var(--success);
      }

      /* Rules container */

      .rules {
        display: flex;
        flex-direction: column;
        gap: 0.75rem;
      }

      .rule {
        border-radius: 10px;
        background: linear-gradient(
          135deg,
          rgba(10, 7, 4, 0.95),
          var(--boxcolor)
        );
        border: 1px solid rgba(255, 255, 255, 0.05);
        box-shadow: 0 10px 26px rgba(0, 0, 0, 0.7);
        overflow: hidden;
      }

      .rule-toggle {
        width: 100%;
        border: 0;
        background: none;
        color: inherit;
        display: flex;
        flex-direction: column;
        text-align: left;
        cursor: pointer;
        padding: 0.95rem 1.15rem 0.95rem 1.2rem;
        transition: background-color var(--transeas), transform var(--transeas),
          border-color var(--transeas);
        position: relative;
      }

      .rule-toggle::after {
        content: "";
        position: absolute;
        inset: 0;
        pointer-events: none;
        border-radius: inherit;
        border: 1px solid transparent;
        transition: border-color var(--transeas);
      }

      .rule-toggle:hover {
        background: radial-gradient(
          circle at top left,
          rgba(255, 85, 255, 0.08),
          transparent 60%
        );
      }

      .rule-toggle:hover::after {
        border-color: rgba(255, 85, 255, 0.3);
      }

      .rule-header-row {
        display: flex;
        align-items: center;
        gap: 0.75rem;
      }

      .rule-number {
        font-family: var(--pixelfont);
        font-size: 0.65rem;
        color: var(--bluecolor);
        text-transform: uppercase;
        letter-spacing: 0.1em;
        flex-shrink: 0;
      }

      .rule-title {
        font-weight: 600;
        font-size: 0.98rem;
        color: lightblue;
      }

      .rule-icon {
        margin-left: auto;
        width: 2rem;
        height: 2rem;
        border-radius: 50%;
        border: 1px solid rgba(255, 255, 255, 0.4);
        display: flex;
        align-items: center;
        justify-content: center;
        font-family: var(--pixelfont);
        font-size: 0.75rem;
        color: var(--maincolor);
        flex-shrink: 0;
        background: rgba(0, 0, 0, 0.5);
        box-shadow: 0 0 10px rgba(255, 85, 255, 0.3);
        transition: background-color var(--transeas),
          border-color var(--transeas), transform var(--transeas),
          color var(--transeas);
      }

      .rule-summary {
        margin-top: 0.4rem;
        font-size: 0.8rem;
        color: var(--muted);
      }

      .rule-body {
        max-height: 0;
        overflow: hidden;
        padding: 0 1.25rem;
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        background: radial-gradient(
          circle at top,
          rgba(255, 255, 255, 0.02),
          rgba(0, 0, 0, 0.8)
        );
        transition: max-height 190ms ease, padding-top 150ms ease,
          padding-bottom 150ms ease, opacity 160ms ease;
        opacity: 0;
        color: aliceblue;
      }

      .rule-body-inner {
        padding: 0.75rem 0 0.95rem;
        font-size: 0.86rem;
        font-family: Arial, Helvetica, sans-serif;
      }

      .rule-body p {
        margin: 0.25rem 0 0.45rem;
      }

      .rule-body h4 {
        margin: 0.4rem 0 0.25rem;
        font-size: 0.8rem;
        text-transform: uppercase;
        letter-spacing: 0.12em;
        color: var(--bluecolor);
      }

      .rule-body ul {
        margin: 0.25rem 0 0.5rem 1.25rem;
        padding: 0;
      }

      .rule-body li {
        margin-bottom: 0.15rem;
      }

      .rule-body strong {
        color: var(--maincolor);
      }

      .rule-pill-row {
        display: flex;
        flex-wrap: wrap;
        gap: 0.35rem;
        margin-top: 0.25rem;
      }

      .pill {
        border-radius: 999px;
        border: 1px solid rgba(255, 255, 255, 0.18);
        padding: 0.15rem 0.55rem;
        font-size: 0.7rem;
        text-transform: uppercase;
        letter-spacing: 0.12em;
        color: var(--muted);
      }

      .pill--danger {
        border-color: rgba(255, 75, 129, 0.7);
        color: var(--danger);
      }

      .pill--info {
        border-color: rgba(114, 137, 218, 0.7);
        color: var(--bluecolor);
      }

      .pill--ok {
        border-color: rgba(76, 255, 179, 0.7);
        color: var(--success);
      }

      .rule--open .rule-body {
        max-height: 900px; /* big enough for content */
        opacity: 1;
        padding-top: 0.4rem;
        padding-bottom: 0.9rem;
      }

      .rule--open .rule-icon {
        background: var(--maincolor);
        border-color: rgba(255, 255, 255, 0.9);
        color: #140812;
        transform: rotate(90deg);
        box-shadow: 0 0 16px rgba(255, 85, 255, 0.65);
      }

      .rule-icon::before {
        content: "+";
      }
      .rule--open .rule-icon::before {
        content: ">";
      }

      .rule-toggle:focus-visible {
        outline: 2px solid rgba(255, 255, 255, 0.7);
        outline-offset: 2px;
      }

      /* Footer / notes */

      .footer-note {
        margin-top: 2rem;
        font-size: 0.8rem;
        color: var(--muted);
        text-align: center;
        font-family: Arial, Helvetica, sans-serif;
      }

      .footer-note strong {
        color: yellowgreen;
      }

      @media (min-width: 720px) {
        .rule-toggle {
          flex-direction: row;
          align-items: center;
        }
        .rule-summary {
          margin-top: 0;
          margin-left: 0.75rem;
        }
        .rule-header-main {
          display: flex;
          flex-direction: column;
          gap: 0.1rem;
        }
      }