:root {
      --ink: #080b0c;
      --paper: #f1f0eb;
      --muted: #b9bdbe;
      --line: rgba(255, 255, 255, .15);
      --yellow: #ffd400;
      --sans: Arial, Helvetica, sans-serif;
      --mono: "Courier New", Courier, monospace;
    }

    * { box-sizing: border-box; }

    html, body { margin: 0; min-height: 100%; background: var(--ink); color: var(--paper); }

    body {
      font-family: var(--sans);
      background:
        radial-gradient(circle at 20% 10%, rgba(255,255,255,.022), transparent 26%),
        var(--ink);
    }

    .shell { width: 100%; margin: 0 auto; }

    .site-header {
      position: relative;
      min-height: 76px;
      display: flex;
      align-items: center;
      padding: 12px 20px;
      border-bottom: 1px solid var(--line);
    }

    .wordmark {
      display: inline-flex;
      align-items: center;
      gap: 13px;
      color: var(--paper);
      text-decoration: none;
      font-size: 20px;
      font-weight: 700;
      letter-spacing: -.01em;
    }

    .wordmark-mark {
      width: 47px;
      height: 47px;
      display: grid;
      place-items: center;
      background: var(--yellow);
      color: #07090a;
      font: 800 17px/1 var(--sans);
      letter-spacing: .04em;
    }

    .primary-nav {
      position: absolute;
      left: 50%;
      transform: translateX(-50%);
      display: flex;
      align-items: center;
      gap: clamp(25px, 2.4vw, 42px);
    }

    .primary-nav a {
      color: #e9e7e1;
      text-decoration: none;
      font: 700 12px/1 var(--mono);
      text-transform: uppercase;
      min-height: 44px;
      display: inline-flex;
      align-items: center;
      transition: color 150ms ease;
    }

    .primary-nav a:hover,
    .primary-nav a:focus-visible,
    .primary-nav a[aria-current="page"] { color: var(--yellow); }

    .hero {
      display: grid;
      grid-template-columns: minmax(0, 57.5fr) minmax(0, 42.5fr);
      min-height: 440px;
      margin: 0;
    }

    .copy-stage {
      min-width: 0;
      display: flex;
      flex-direction: column;
      justify-content: center;
      padding: clamp(48px, 5vw, 78px) clamp(32px, 4.7vw, 76px) 42px;
      background: transparent;
    }

    .eyebrow {
      margin: 0 0 25px;
      color: #e9e7e1;
      font: 700 12px/1.25 var(--mono);
      text-transform: uppercase;
    }

    h1 {
      max-width: 820px;
      margin: 0;
      color: #f4f2ed;
      font-size: clamp(43px, 4vw, 66px);
      line-height: 1.08;
      letter-spacing: -.035em;
      text-transform: uppercase;
    }

    .switch-line { display: block; margin-top: 8px; white-space: nowrap; }

    .headline-rule {
      width: min(76%, 610px);
      height: 6px;
      margin: 16px 0 20px;
      background: var(--yellow);
    }

    .deck {
      max-width: 720px;
      margin: 0;
      color: #e3e3df;
      font-size: clamp(14px, 1.1vw, 18px);
      line-height: 1.5;
    }

    .social-row {
      width: min(100%, 670px);
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: clamp(20px, 3vw, 46px);
      margin-top: 42px;
    }

    .social-link {
      min-width: 0;
      min-height: 44px;
      display: inline-flex;
      align-items: center;
      gap: 13px;
      color: #f3f1ec;
      text-decoration: none;
      font-size: clamp(13px, 1vw, 16px);
      font-weight: 600;
      white-space: nowrap;
    }

    .social-mark {
      flex: 0 0 auto;
      width: 38px;
      height: 38px;
      display: grid;
      place-items: center;
      overflow: hidden;
      background: var(--yellow);
      color: #050505;
      transition: transform 150ms ease, background-color 150ms ease;
    }

    .social-link:hover .social-mark,
    .social-link:focus-visible .social-mark { transform: translateY(-1px); background: #ffdf36; }

    .social-link:focus-visible { outline: 2px solid var(--yellow); outline-offset: 4px; }

    .x-mark { font: 700 21px/1 var(--sans); }
    .linkedin-mark { font: 800 20px/1 var(--sans); letter-spacing: -.08em; }

    .grok-mark img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      filter: invert(1);
      mix-blend-mode: multiply;
    }

    .portrait-stage {
      position: relative;
      min-width: 0;
      overflow: hidden;
      background: var(--yellow);
    }

    .portrait-stage > img {
      position: absolute;
      left: 50%;
      bottom: 0;
      width: 100%;
      height: 100%;
      transform: translateX(-50%);
      object-fit: contain;
      object-position: center bottom;
    }

    .portrait-caption {
      position: absolute;
      right: 22px;
      bottom: 22px;
      margin: 0;
      padding: 13px 16px;
      background: var(--ink);
      color: var(--paper);
      font: 700 14px/1.45 var(--mono);
      text-transform: uppercase;
    }

    @media (max-width: 980px) {
      .site-header { padding-inline: 16px; }
      .primary-nav { position: static; transform: none; margin-left: auto; gap: 16px; }
      .hero { grid-template-columns: 1fr; }
      .copy-stage { min-height: 410px; }
      .portrait-stage { min-height: 560px; }
    }

    @media (max-width: 620px) {
      .site-header { align-items: flex-start; flex-wrap: wrap; row-gap: 5px; }
      .wordmark { font-size: 16px; }
      .wordmark-mark { width: 42px; height: 42px; }
      .primary-nav { width: 100%; justify-content: space-between; gap: 0; }
      .primary-nav a { font-size: 10px; }
      .copy-stage { min-height: 0; padding: 46px 24px 32px; }
      .eyebrow { font-size: 10px; margin-bottom: 20px; }
      h1 { font-size: clamp(34px, 10vw, 48px); }
      .switch-line { white-space: normal; }
      .headline-rule { width: 70%; height: 5px; }
      .social-row { gap: 6px; margin-top: 32px; }
      .social-link { gap: 7px; font-size: clamp(9px, 2.9vw, 12px); }
      .social-mark { width: 29px; height: 29px; }
      .x-mark { font-size: 17px; }
      .linkedin-mark { font-size: 15px; }
      .portrait-stage { min-height: 470px; }
      .portrait-caption { right: 12px; bottom: 12px; font-size: 11px; }
    }
    .research-lab {
      grid-column: 1 / -1;
      padding: 64px 20px 48px;
      background: var(--ink);
      color: var(--paper);
    }

    .research-lab-head {
      display: grid;
      grid-template-columns: 1fr auto;
      align-items: end;
      gap: 24px;
      padding-bottom: 18px;
      border-bottom: 1px solid rgba(255,255,255,.18);
    }

    .research-lab-head p {
      margin: 0;
      font: 700 12px/1.3 var(--mono);
      text-transform: uppercase;
    }

    .research-lab-head strong {
      margin: 0;
      font: 800 clamp(20px, 1.6vw, 23px)/1 var(--sans);
      letter-spacing: -.025em;
      text-transform: uppercase;
    }

    .research-lab-head p { color: var(--muted); }

    .micro-label {
      display: block;
      color: var(--yellow);
      font: 700 11px/1.25 var(--mono);
      text-transform: uppercase;
    }

    .research-link {
      min-height: 44px;
      display: inline-flex;
      align-items: flex-end;
      color: inherit;
      font: 700 12px/1 var(--mono);
      text-decoration: none;
      text-transform: uppercase;
    }

    .research-link::after { content: " →"; margin-left: 8px; transition: transform .18s ease; }
    .research-link:hover::after { transform: translateX(4px); }
    .plate-row {
      min-height: 322px;
      display: grid;
      border-top: 1px solid rgba(255,255,255,.18);
    }

    .flagship-research .plate-row:first-child { border-top: 0; }

    .plate-ai { grid-template-columns: 4fr 8fr; }
    .plate-btc { grid-template-columns: 5fr 7fr; border-bottom: 1px solid rgba(255,255,255,.18); }

    .yellow-title-plate {
      display: grid;
      grid-template-rows: auto 1fr auto;
      padding: 32px;
      background: var(--yellow);
      color: var(--ink);
    }

    .yellow-title-plate .micro-label {
      color: var(--ink);
      font-size: 12px;
    }

    .yellow-title-plate h3 {
      align-self: center;
      margin: 24px 0;
      font-size: clamp(48px, 4vw, 56px);
      line-height: .9;
      letter-spacing: -.03em;
      text-transform: uppercase;
    }

    .yellow-title-plate h3 span { display: block; }

    .yellow-title-plate p {
      margin: 0;
      font: 700 12px/1.4 var(--mono);
      text-transform: uppercase;
    }

    .plate-evidence {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
      align-content: center;
      padding: 34px 40px;
    }

    .plate-evidence-copy h3,
    .plate-btc-copy h3 {
      margin: 20px 0 16px;
      font-size: clamp(38px, 4vw, 58px);
      line-height: .9;
      letter-spacing: -.045em;
      text-transform: uppercase;
    }

    .plate-evidence-copy p,
    .plate-btc-copy p {
      margin: 0;
      color: #d1d1cc;
      font-size: 17px;
      line-height: 1.5;
    }

    .role-leader-list { display: grid; align-content: center; }
    .role-leader-item { padding: 12px 0; border-top: 1px solid rgba(255,255,255,.18); }
    .role-leader-item:last-child { border-bottom: 1px solid rgba(255,255,255,.18); }
    .role-leader-item div {
      display: grid;
      grid-template-columns: minmax(118px, 1.35fr) minmax(72px, .85fr) auto;
      align-items: baseline;
      gap: 12px;
      font: 700 11px/1.25 var(--mono);
      text-transform: uppercase;
    }
    .role-leader-item b { color: var(--paper); }
    .role-leader-item strong { color: var(--yellow); font-size: 20px; }
    .role-leader-item i { display: block; height: 2px; width: var(--score); margin-top: 9px; background: var(--yellow); }

    .plate-btc-copy {
      display: flex;
      flex-direction: column;
      justify-content: center;
      padding: 34px 40px 34px 0;
    }

    .plate-btc-copy .research-link { margin-top: 28px; }
    .plate-interface { min-height: 322px; margin: 0; overflow: hidden; background: #0d0f0d; }
    .plate-interface img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 24%; filter: saturate(.72) contrast(1.08); }

    @media (max-width: 980px) {
      .research-lab { padding-top: 50px; }
      .plate-ai, .plate-btc { grid-template-columns: 1fr; }
      .yellow-title-plate { min-height: 270px; }
      .plate-evidence { grid-template-columns: 1fr; }
      .plate-btc-copy { padding: 34px 0; }
    }

    @media (max-width: 620px) {
      .research-lab { padding: 44px 20px 36px; }
      .research-lab-head { grid-template-columns: 1fr; gap: 8px; }
      .research-lab-head strong { font-size: 20px; }
      .research-lab-head p { font-size: 11px; }
      .yellow-title-plate { min-height: 260px; padding: 24px; }
      .yellow-title-plate h3 { margin: 18px 0; font-size: clamp(32px, 10.2vw, 40px); line-height: .94; }
      .yellow-title-plate .micro-label,
      .yellow-title-plate p { font-size: 11px; }
      .plate-evidence { padding: 30px 0; }
      .plate-evidence-copy h3, .plate-btc-copy h3 { font-size: 40px; }
      .plate-evidence-copy p, .plate-btc-copy p { font-size: 16px; }
      .plate-interface { min-height: 218px; }
      .role-leader-item div { grid-template-columns: 1.25fr .8fr auto; gap: 8px; font-size: 10px; }
      .role-leader-item strong { font-size: 18px; }
    }
    .workways-section {
      grid-column: 1 / -1;
      padding: 0 20px 64px;
      background: var(--ink);
    }

    .workways-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
    }

    .workway-link {
      min-width: 0;
      min-height: 116px;
      display: grid;
      grid-template-rows: auto 1fr auto;
      padding: 17px 16px 14px;
      color: var(--paper);
      text-decoration: none;
      transition: background-color 150ms ease;
    }

    .workway-link + .workway-link { border-left: 1px solid var(--line); }
    .workway-link:hover { background: rgba(255,255,255,.025); }
    .workway-link:focus-visible { outline: 2px solid var(--yellow); outline-offset: -2px; }

    .workway-meta,
    .workway-action {
      font: 700 11px/1.3 var(--mono);
      text-transform: uppercase;
    }

    .workway-meta { color: var(--yellow); }

    .workway-title {
      align-self: center;
      margin: 0;
      color: var(--yellow);
      font-size: clamp(23px, 2vw, 30px);
      line-height: 1;
      letter-spacing: -.035em;
      text-transform: uppercase;
      white-space: nowrap;
    }

    .workway-action {
      justify-self: end;
      color: #dddcd7;
    }

    @media (max-width: 840px) {
      .workways-section { padding: 0 14px 44px; }
      .workways-grid { grid-template-columns: 1fr; }
      .workway-link { min-height: 108px; padding: 16px 17px 13px; }
      .workway-link + .workway-link { border-left: 0; border-top: 1px solid var(--line); }
      .workway-title { font-size: clamp(24px, 7.2vw, 30px); }
      .workway-meta { font-size: 10.5px; }
      .workway-action { font-size: 11px; }
    }

    @media (prefers-reduced-motion: reduce) {
      .workway-link { transition: none; }
    }