:root {
        --paper: #f7f0dc;
        --paper-2: #efe3c4;
        --card: #fffaf0;
        --ink: #221a12;
        --ink-soft: #57493a;
        --red: #bf3520;
        --red-deep: #982818;
        --gold: #b57f16;
        --line: #d9c9a1;
        --ink-bg: #211a13;
        --ink-bg-text: #f3ead2;
        --ink-bg-soft: #cbbd97;
        --focus: #1f6fb2;
        color-scheme: light;
      }
      @media (prefers-color-scheme: dark) {
        :root {
          --paper: #171310;
          --paper-2: #1f1a14;
          --card: #241e16;
          --ink: #f0e6cd;
          --ink-soft: #c6b890;
          --red: #e2603f;
          --red-deep: #e2603f;
          --gold: #d9a441;
          --line: #40382a;
          --ink-bg: #0f0d0a;
          --ink-bg-text: #f3ead2;
          --ink-bg-soft: #b3a37f;
          --focus: #7db8e8;
          color-scheme: dark;
        }
      }
      * { box-sizing: border-box; }
      html { scroll-behavior: smooth; }
      @media (prefers-reduced-motion: reduce) {
        html { scroll-behavior: auto; }
      }
      body {
        margin: 0;
        background: var(--paper);
        color: var(--ink);
        font-family: "Bitter", Georgia, "Times New Roman", serif;
        font-size: 17px;
        line-height: 1.6;
      }
      .mono { font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace; }
      a { color: var(--red-deep); }
      a:focus-visible, button:focus-visible, input:focus-visible, summary:focus-visible {
        outline: 3px solid var(--focus);
        outline-offset: 2px;
      }
      .wrap {
        max-width: 1140px; margin: 0 auto;
        padding-left: max(clamp(24px, 6vw, 56px), env(safe-area-inset-left, 0px));
        padding-right: max(clamp(24px, 6vw, 56px), env(safe-area-inset-right, 0px));
      }

      /* ---------- top nav ---------- */
      .topbar {
        position: sticky; top: 0; z-index: 20;
        background: var(--paper);
        border-bottom: 2px solid var(--ink);
      }
      .topbar-in {
        display: flex; align-items: center; gap: 18px;
        max-width: 1140px; margin: 0 auto;
        padding-top: 12px; padding-bottom: 12px;
        padding-left: max(clamp(24px, 6vw, 56px), env(safe-area-inset-left, 0px));
        padding-right: max(clamp(24px, 6vw, 56px), env(safe-area-inset-right, 0px));
      }
      .brand {
        font-family: "IBM Plex Mono", monospace;
        font-weight: 600; letter-spacing: 0.14em; font-size: 28px; line-height: 1;
        color: var(--ink); text-decoration: none; white-space: nowrap;
        display: inline-flex; align-items: center; align-self: center; gap: 0;
      }
      .brand b { color: var(--red); font-weight: 600; }
      /* One unbroken word: CLANKER and LIT live inside a single span, so no
         space and no flex gap can land at the color split. */
      .brand .wordmark { white-space: nowrap; }
      .topnav { display: flex; gap: 16px; margin-left: auto; flex-wrap: nowrap; align-items: center; align-self: center; }
      .topnav a {
        color: var(--ink-soft); text-decoration: none; font-size: 14.5px; font-weight: 600;
        white-space: nowrap; line-height: 1;
        display: inline-flex; align-items: center;
      }
      .topnav a:hover { color: var(--red); }
      .top-cta {
        background: var(--red); color: #fff8ea !important;
        padding: 7px 14px; border: 2px solid var(--ink);
        box-shadow: 3px 3px 0 var(--ink);
        white-space: nowrap; text-decoration: none;
        font-size: 14.5px; font-weight: 600; line-height: 1.2;
        display: inline-flex; align-items: center; align-self: center;
      }
      .top-cta:hover { background: var(--red-deep); color: #fff8ea !important; }
      .nav-toggle {
        display: none;
        align-items: center; justify-content: center;
        width: 38px; height: 38px; flex: 0 0 auto;
        background: transparent; color: var(--ink);
        border: 2px solid var(--ink);
        font-size: 20px; line-height: 1; font-family: inherit;
        cursor: pointer; padding: 0;
      }
      .nav-toggle:hover { background: var(--paper-2); color: var(--red); }
      @media (max-width: 1080px) {
        .topbar-in {
          gap: 8px 12px;
          padding-left: max(24px, env(safe-area-inset-left, 0px));
          padding-right: max(24px, env(safe-area-inset-right, 0px));
        }
        .brand { font-size: 26px; letter-spacing: 0.12em; }
        .topnav { gap: 8px 12px; }
        .topnav a { font-size: 13.5px; }
        .top-cta { padding: 7px 11px; font-size: 13.5px; }
      }
      @media (max-width: 680px) {
        .topbar-in {
          flex-wrap: wrap; align-items: center;
          gap: 8px; padding-top: 10px; padding-bottom: 10px;
          padding-left: max(16px, env(safe-area-inset-left, 0px));
          padding-right: max(16px, env(safe-area-inset-right, 0px));
        }
        .brand { flex: 0 1 auto; font-size: 21px; letter-spacing: 0.08em; }
        .top-cta {
          margin-left: auto; padding: 6px 9px;
          font-size: 13px; box-shadow: 2px 2px 0 var(--ink);
        }
        .nav-toggle { display: inline-flex; width: 36px; height: 36px; }
        .topnav {
          display: none;
          order: 4; flex-basis: 100%; width: 100%;
          margin-left: 0; flex-direction: column;
          flex-wrap: nowrap; align-items: stretch; gap: 0;
          border-top: 1px solid var(--line);
          padding-top: 4px; margin-top: 4px;
        }
        .topnav.is-open { display: flex; }
        .topnav a {
          font-size: 15px; padding: 10px 4px;
          border-bottom: 1px solid var(--line);
        }
        .topnav a:last-child { border-bottom: none; }
      }

      /* ---------- hero ---------- */
      /* Vertical padding only: the horizontal gutters come from .wrap.
         (A padding shorthand here would zero the side gutters and leave
         the hero flush against the screen edges on phones.) */
      .hero { padding-top: clamp(56px, 8vw, 80px); padding-bottom: 28px; text-align: left; }
      .presents {
        font-family: "IBM Plex Mono", monospace;
        font-size: 13px; letter-spacing: 0.22em; text-transform: uppercase;
        color: var(--red); font-weight: 600; margin: 0 0 14px;
      }
      h1 {
        font-size: clamp(42px, 8.2vw, 84px);
        line-height: 0.98; font-weight: 900; letter-spacing: -0.01em;
        margin: 0 0 20px;
      }
      h1 .accent { color: var(--red); font-style: italic; }
      .lede { font-size: clamp(18px, 2.6vw, 22px); max-width: 46em; margin: 0 0 8px; }
      .lede strong { font-weight: 800; }
      .subnote { color: var(--ink-soft); font-size: 16px; max-width: 44em; }
      .cta-row { display: flex; gap: 14px; flex-wrap: wrap; margin: 26px 0 34px; }
      .btn {
        display: inline-block; text-decoration: none; font-weight: 800;
        font-size: 16.5px; padding: 13px 22px; border: 2px solid var(--ink);
      }
      .btn-primary { background: var(--red); color: #fff8ea; box-shadow: 4px 4px 0 var(--ink); }
      .btn-primary:hover { background: var(--red-deep); }
      .btn-ghost { background: transparent; color: var(--ink); }
      .btn-ghost:hover { background: var(--paper-2); }
      .btn-howto { background: var(--ink); color: var(--paper); box-shadow: 4px 4px 0 var(--red); }
      .btn-howto:hover { background: var(--red-deep); color: #fff8ea; }
      .hero-art {
        border: 3px solid var(--ink);
        outline: 2px solid var(--red); outline-offset: 5px;
        margin: 6px 0 0; line-height: 0; background: #f3ead2;
      }
      .hero-art img { width: 100%; height: auto; display: block; }
      .facts {
        display: grid; grid-template-columns: repeat(4, 1fr);
        border: 2px solid var(--ink); border-top: none;
        background: var(--card); margin: 8px 0 0;
      }
      .fact { padding: 20px 22px; border-right: 1px solid var(--line); }
      .fact:last-child { border-right: none; }
      .fact .num {
        font-family: "IBM Plex Mono", monospace; font-weight: 600;
        font-size: clamp(19px, 3vw, 26px); color: var(--red); display: block; line-height: 1.15;
      }
      .fact .lbl { font-size: 13.5px; color: var(--ink-soft); display: block; margin-top: 3px; }
      @media (max-width: 720px) {
        .facts { grid-template-columns: 1fr 1fr; }
        .fact:nth-child(2) { border-right: none; }
        .fact:nth-child(1), .fact:nth-child(2) { border-bottom: 1px solid var(--line); }
      }
      .status-line {
        margin: 18px 0 0; padding: 12px 16px;
        border: 2px dashed var(--red);
        font-family: "IBM Plex Mono", monospace; font-size: 14.5px;
        display: none;
      }
      .status-line.on { display: block; }
      .status-line b { color: var(--red); }

      /* ---------- sections ---------- */
      section { padding: 64px 0 8px; }
      .kicker {
        font-family: "IBM Plex Mono", monospace; font-size: 12.5px;
        letter-spacing: 0.22em; text-transform: uppercase; color: var(--red);
        font-weight: 600; margin: 0 0 10px;
      }
      h2 { font-size: clamp(30px, 5vw, 44px); font-weight: 900; line-height: 1.08; margin: 0 0 16px; }
      h3 { font-size: 21px; font-weight: 800; margin: 0 0 8px; }
      .section-lede { font-size: 18.5px; max-width: 44em; color: var(--ink); }
      .muted { color: var(--ink-soft); }

      /* premise (dark band) */
      .band {
        background: var(--ink-bg); color: var(--ink-bg-text);
        margin-top: 40px; padding: 64px 0 56px;
        border-top: 3px solid var(--red); border-bottom: 3px solid var(--red);
      }
      .band .kicker { color: #e2603f; }
      .band h2 { color: var(--ink-bg-text); }
      .band .big-line {
        font-size: clamp(26px, 4.6vw, 40px); font-weight: 800; line-height: 1.25;
        max-width: 22em; margin: 0 0 22px;
      }
      .band .big-line em { color: #e2603f; }
      .band p { color: var(--ink-bg-soft); max-width: 46em; font-size: 17.5px; }
      .band p strong { color: var(--ink-bg-text); }

      /* steps */
      .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 28px; }
      @media (max-width: 900px) { .steps { grid-template-columns: 1fr 1fr; } }
      @media (max-width: 520px) { .steps { grid-template-columns: 1fr; } }
      .steps.two { grid-template-columns: 1fr 1fr; }
      @media (max-width: 620px) { .steps.two { grid-template-columns: 1fr; } }
      .step {
        background: var(--card); border: 2px solid var(--ink); padding: 20px;
      }
      .step .n {
        font-family: "IBM Plex Mono", monospace; font-size: 30px; font-weight: 600;
        color: var(--red); line-height: 1; display: block; margin-bottom: 12px;
      }
      .step p { margin: 0; font-size: 15.5px; color: var(--ink-soft); }
      .step p strong { color: var(--ink); }

      /* pace planner */
      .planner {
        background: var(--card); border: 2px solid var(--ink);
        box-shadow: 6px 6px 0 var(--paper-2); padding: 26px; margin-top: 26px;
      }
      .pace-btn {
        font-family: "IBM Plex Mono", monospace; font-size: 14.5px; font-weight: 600;
        padding: 10px 16px; border: 2px solid var(--ink); background: var(--paper);
        color: var(--ink); cursor: pointer;
      }
      .progress-row { display: flex; gap: 10px; flex-wrap: wrap; }
      .progress-row input {
        font-family: "IBM Plex Mono", monospace; font-size: 16px;
        padding: 10px 12px; border: 2px solid var(--ink); background: var(--paper);
        color: var(--ink); width: 180px;
      }
      .bar-track { height: 18px; border: 2px solid var(--ink); background: var(--paper); margin-top: 16px; }
      .bar-fill { height: 100%; width: 0%; background: var(--red); transition: width 0.4s ease; }
      @media (prefers-reduced-motion: reduce) { .bar-fill { transition: none; } }
      .progress-msg { font-family: "IBM Plex Mono", monospace; font-size: 14.5px; margin-top: 10px; min-height: 1.4em; }

      /* prizes */
      .finisher {
        border: 2px dashed var(--red); padding: 20px 22px; margin-top: 24px;
        font-size: 17.5px;
      }
      .finisher strong { color: var(--red); }
      .cats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 18px; }
      @media (max-width: 820px) { .cats { grid-template-columns: 1fr; } }
      .cat { background: var(--card); border: 2px solid var(--ink); padding: 22px; }
      .cat .tag {
        font-family: "IBM Plex Mono", monospace; font-size: 12px; letter-spacing: 0.18em;
        text-transform: uppercase; color: var(--gold); font-weight: 600;
      }
      .cat p { color: var(--ink-soft); font-size: 15.5px; margin: 0; }
      .grand {
        margin-top: 18px; background: var(--ink-bg); color: var(--ink-bg-text);
        padding: 26px; border: 3px solid var(--red); text-align: left;
      }
      .grand .tag {
        font-family: "IBM Plex Mono", monospace; font-size: 12px; letter-spacing: 0.2em;
        text-transform: uppercase; color: #e2603f; font-weight: 600;
      }
      .grand h3 { font-size: clamp(24px, 4vw, 32px); margin: 6px 0 8px; }
      .grand p { color: var(--ink-bg-soft); margin: 0; max-width: 44em; }

      /* rules */
      .rules-list { list-style: none; counter-reset: rule; padding: 0; margin: 26px 0 0; }
      .rules-list li {
        counter-increment: rule; position: relative;
        padding: 16px 0 16px 64px; border-top: 1px solid var(--line);
      }
      .rules-list li:last-child { border-bottom: 1px solid var(--line); }
      .rules-list li::before {
        content: counter(rule, decimal-leading-zero);
        position: absolute; left: 0; top: 14px;
        font-family: "IBM Plex Mono", monospace; font-weight: 600;
        font-size: 20px; color: var(--red);
      }
      .rules-list strong { font-weight: 800; }
      .rules-list p { margin: 2px 0 0; color: var(--ink-soft); font-size: 16px; }

      /* timeline */
      .timeline { list-style: none; padding: 0; margin: 28px 0 0; }
      .timeline li {
        display: grid; grid-template-columns: 190px 1fr; gap: 18px;
        padding: 15px 0; border-top: 1px solid var(--line);
      }
      .timeline li:last-child { border-bottom: 1px solid var(--line); }
      .timeline .when {
        font-family: "IBM Plex Mono", monospace; font-weight: 600; font-size: 15px; color: var(--red);
      }
      .timeline .what strong { display: block; font-size: 17.5px; }
      .timeline .what span { color: var(--ink-soft); font-size: 15.5px; }
      @media (max-width: 620px) { .timeline li { grid-template-columns: 1fr; gap: 2px; } }

      /* faq */
      .faq { margin-top: 22px; border-top: 2px solid var(--ink); }
      .faq details { border-bottom: 1px solid var(--line); }
      .faq summary {
        cursor: pointer; font-weight: 800; font-size: 18px; padding: 16px 34px 16px 0;
        list-style: none; position: relative;
      }
      .faq summary::-webkit-details-marker { display: none; }
      .faq summary::after {
        content: "+"; position: absolute; right: 4px; top: 12px;
        font-family: "IBM Plex Mono", monospace; font-size: 24px; color: var(--red);
      }
      .faq details[open ] summary::after { content: "–"; }
      .faq .a { padding: 0 0 18px; color: var(--ink-soft); max-width: 46em; }
      .faq .a strong { color: var(--ink); }

      /* final cta + footer */
      .final {
        margin: 72px 0 0; background: var(--ink-bg); color: var(--ink-bg-text);
        padding: 56px 0; border-top: 3px solid var(--red);
      }
      .final h2 { color: var(--ink-bg-text); }
      .final p { color: var(--ink-bg-soft); max-width: 42em; font-size: 18px; }
      .checklist { list-style: none; padding: 0; margin: 22px 0 30px; }
      .checklist li { padding: 7px 0 7px 34px; position: relative; font-size: 17px; }
      .checklist li::before {
        content: "✓"; position: absolute; left: 2px; top: 6px;
        color: #e2603f; font-weight: 900;
      }
      .final .btn-primary { box-shadow: 4px 4px 0 #000; }
      footer { padding: 34px 0 44px; border-top: 2px solid var(--ink); margin-top: 0; }
      footer .wrap { display: flex; gap: 22px; flex-wrap: wrap; align-items: baseline; }
      footer .fbrand { font-family: "IBM Plex Mono", monospace; font-weight: 600; letter-spacing: 0.14em; }
      footer nav { display: flex; gap: 16px; flex-wrap: wrap; margin-left: auto; }
      footer nav a { color: var(--ink-soft); text-decoration: none; font-weight: 600; font-size: 15px; }
      footer nav a:hover { color: var(--red); }
      footer .fine { width: 100%; color: var(--ink-soft); font-size: 14px; margin-top: 8px; }