@import url("https://fonts.googleapis.com/css2?family=Bricolage+Grotesque:wght@600;700&family=DM+Sans:wght@400;500;700&display=swap");

      :root {
        color-scheme: dark;
        --bg: #0b1018;
        --panel: #121a26;
        --line: #293447;
        --text: #edf2fa;
        --muted: #a5b2c7;
        --accent: #98edcd;
      }
      * {
        box-sizing: border-box;
      }
      html {
        scroll-behavior: smooth;
        scroll-padding-top: 96px;
      }
      body {
        max-width: none;
        margin: 0;
        padding: 0;
        background: var(--bg);
        color: var(--text);
        font-family:
          "DM Sans",
          -apple-system,
          BlinkMacSystemFont,
          "Segoe UI",
          sans-serif;
        line-height: 1.65;
      }
      body::before {
        display: none;
      }
      a {
        color: #a9c9ff;
        text-underline-offset: 4px;
      }
      button,
      input,
      select {
        font: inherit;
      }
      button,
      a,
      input,
      select,
      summary {
        touch-action: manipulation;
      }
      :focus-visible {
        outline: 3px solid var(--accent);
        outline-offset: 4px;
      }
      [hidden] {
        display: none !important;
      }
      .shell {
        max-width: 1160px;
        margin: auto;
        padding: 0 32px;
      }
      .topbar {
        border-bottom: 1px solid var(--line);
        background: #0b1018;
      }
      .nav {
        height: 80px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 20px;
      }
      .brand {
        color: var(--text);
        font-size: 20px;
        font-weight: 700;
        text-decoration: none;
        display: flex;
        align-items: center;
        gap: 10px;
      }
      .brand-mark {
        background: var(--accent);
        color: #0b1018;
        border-radius: 10px;
        padding: 6px 8px;
        font-size: 15px;
      }
      .nav-links {
        display: flex;
        align-items: center;
        gap: 24px;
      }
      .nav-links a {
        font-size: 14px;
        text-decoration: none;
      }
      .nav select {
        background: transparent;
        border: 1px solid var(--line);
        color: var(--text);
        padding: 8px;
        border-radius: 8px;
      }
      .hero {
        padding: 66px 0 42px;
        display: grid;
        grid-template-columns: 1.5fr 1fr;
        gap: 70px;
        align-items: center;
      }
      .eyebrow {
        font-size: 11px;
        font-weight: 700;
        letter-spacing: 2px;
        color: var(--accent);
        margin: 0 0 18px;
      }
      h1 {
        font-family: "Bricolage Grotesque", sans-serif;
        font-size: clamp(36px, 5vw, 60px);
        line-height: 1.08;
        letter-spacing: -1.6px;
        max-width: 700px;
        margin: 0 0 22px;
        color: var(--text);
      }
      .hero p {
        color: var(--muted);
        font-size: 17px;
        max-width: 570px;
      }
      .hero-aside {
        border-left: 1px solid var(--line);
        padding-left: 32px;
      }
      .hero-aside ol {
        list-style: none;
        margin: 0;
        padding: 0;
        display: grid;
        gap: 24px;
      }
      .hero-aside li {
        display: flex;
        gap: 16px;
        align-items: center;
        font-size: 14px;
      }
      .step-no {
        font-family: monospace;
        color: var(--accent);
        font-size: 13px;
      }
      .section-head {
        display: flex;
        justify-content: space-between;
        gap: 20px;
        align-items: baseline;
        margin: 20px 0;
      }
      .section-head h2 {
        border: 0;
        margin: 0;
        padding: 0;
        font-size: 22px;
        letter-spacing: -0.4px;
      }
      .section-head p {
        margin: 0;
        color: var(--muted);
        font-size: 13px;
      }
      .runtime-grid {
        border: 0;
        margin: 0 0 32px;
        padding: 0;
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 12px;
      }
      .runtime-option {
        position: relative;
        cursor: pointer;
        display: flex;
      }
      .runtime-option input {
        position: absolute;
        opacity: 0;
        width: 1px;
        height: 1px;
      }
      .runtime-option span {
        width: 100%;
        border: 1px solid var(--line);
        border-radius: 14px;
        background: var(--panel);
        padding: 20px 16px;
        display: flex;
        flex-direction: column;
        gap: 7px;
      }
      .runtime-option b {
        font-size: 16px;
        color: var(--text);
      }
      .runtime-option small {
        font-size: 11px;
        color: var(--muted);
      }
      .runtime-option input:checked + span {
        border-color: var(--accent);
        background: #132b2b;
        box-shadow: inset 0 0 0 1px var(--accent);
      }
      .runtime-option input:focus-visible + span {
        outline: 3px solid white;
        outline-offset: 3px;
      }
      .runtime-option input:checked + span:after {
        content: "✓";
        position: absolute;
        right: 12px;
        top: 9px;
        color: var(--accent);
      }
      .setup-grid {
        display: grid;
        grid-template-columns: minmax(0, 1fr) 310px;
        gap: 28px;
        align-items: start;
      }
      .identity-card,
      .guide-card {
        border: 1px solid var(--line);
        border-radius: 18px;
        background: var(--panel);
        padding: 26px;
        min-width: 0;
      }
      .identity-card h2,
      .guide-card > h2 {
        margin-top: 0;
      }
      .identity-card h3 {
        font-size: 16px;
      }
      .signed-note {
        padding: 15px;
        background: #172438;
        border-radius: 10px;
        margin: 16px 0;
      }
      .signed-note p {
        font-size: 13px;
        color: var(--muted);
      }
      .button-link,
      .primary-btn {
        display: inline-flex;
        justify-content: center;
        align-items: center;
        background: var(--accent);
        color: #08211c;
        border: 1px solid var(--accent);
        border-radius: 9px;
        min-height: 44px;
        padding: 10px 16px;
        font-weight: 700;
        font-size: 13px;
        text-decoration: none;
        cursor: pointer;
      }
      .secondary-btn {
        background: transparent;
        border: 1px solid var(--line);
        border-radius: 9px;
        color: var(--text);
        padding: 10px 14px;
        min-height: 44px;
        cursor: pointer;
      }
      .agent-register {
        background: none;
        border: 0;
        border-radius: 0;
        padding: 0;
        margin: 18px 0 0;
      }
      .agent-register label {
        display: block;
        font-size: 13px;
        color: var(--text);
        font-weight: 500;
        margin: 15px 0 6px;
      }
      .agent-register input:not([type="checkbox"]) {
        width: 100%;
        padding: 12px;
        background: #0b121d;
        border: 1px solid #41506a;
        border-radius: 8px;
        color: var(--text);
        font-size: 16px;
      }
      .agent-register .terms-row {
        display: flex;
        align-items: flex-start;
        gap: 10px;
        font-size: 12px;
        font-weight: 400;
        line-height: 1.6;
        color: var(--muted);
      }
      .terms-row input {
        width: 18px;
        height: 18px;
        flex-shrink: 0;
        margin-top: 3px;
        accent-color: #63bda1;
      }
      .agent-actions {
        display: flex;
        gap: 8px;
        flex-wrap: wrap;
        margin: 16px 0;
      }
      .hint {
        font-size: 12px;
        color: var(--muted);
        margin: 8px 0;
      }
      .optional {
        margin: 16px 0;
      }
      .optional summary {
        font-size: 13px;
        color: var(--muted);
      }
      .guide-card h2 {
        font-size: 22px;
        border: 0;
        margin: 0 0 18px;
        padding: 0;
      }
      .guide-card h2:not(:first-child) {
        margin-top: 32px;
        font-size: 18px;
      }
      .guide-card p {
        font-size: 14px;
        color: #c4cddd;
        margin: 12px 0;
      }
      .resources pre {
        font-size: 12px;
        white-space: pre-wrap;
        overflow-wrap: anywhere;
        background: #080e16;
        border: 1px solid var(--line);
        border-radius: 12px;
        padding: 46px 16px 16px;
        position: relative;
      }
      .guide-card pre {
        font-size: 12px;
        line-height: 1.8;
        background: #080e16;
        border: 1px solid var(--line);
        padding: 46px 18px 18px;
        border-radius: 12px;
        overflow-x: auto;
        white-space: pre;
        margin: 18px 0;
        position: relative;
      }
      .guide-card code {
        font-size: 12px;
        color: var(--accent);
        overflow-wrap: anywhere;
      }
      .copy-btn {
        position: absolute;
        right: 10px;
        top: 8px;
        color: var(--muted);
        background: #1a2637;
        border: 1px solid #3b4960;
        padding: 6px 12px;
        border-radius: 6px;
        cursor: pointer;
        min-height: 32px;
      }
      .copy-btn.copied {
        color: var(--accent);
      }
      .label {
        font-size: 10px;
        padding: 3px 7px;
        border-radius: 4px;
        display: inline-block;
        background: #243a3a;
        color: var(--accent);
        margin-right: 6px;
      }
      .result-box {
        display: none;
        margin-top: 20px;
        border: 1px solid #438c76;
        background: #102a24;
        padding: 16px;
        border-radius: 12px;
        overflow-wrap: anywhere;
      }
      .result-box.error {
        border-color: #e78d8d;
        background: #301f26;
      }
      .result-title {
        font-weight: 700;
        color: #fff;
      }
      .result-box pre {
        white-space: pre-wrap;
      }
      .result-box code {
        overflow-wrap: anywhere;
      }
      .claim-link {
        display: block;
        margin: 12px 0;
        overflow-wrap: anywhere;
      }
      .security-note {
        margin: 28px 0;
        padding: 16px 20px;
        border: 1px solid var(--line);
        border-radius: 12px;
        color: var(--muted);
        font-size: 13px;
      }
      .security-note strong {
        color: var(--text);
      }
      .resources {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 28px;
        margin: 44px 0;
      }
      .resources > div {
        min-width: 0;
      }
      .resources h2 {
        font-size: 22px;
        border: 0;
        color: var(--text);
        margin: 0 0 16px;
      }
      .resources details {
        border-bottom: 1px solid var(--line);
        padding: 14px 0;
      }
      .resources summary {
        cursor: pointer;
        font-size: 14px;
      }
      .resources p {
        color: var(--muted);
        font-size: 13px;
      }
      .link-card {
        display: block;
        border: 1px solid var(--line);
        padding: 18px;
        border-radius: 12px;
        margin: 12px 0;
        text-decoration: none;
      }
      .link-card strong {
        display: block;
        color: var(--text);
      }
      .link-card span {
        font-size: 13px;
        color: var(--muted);
      }
      footer {
        border-top: 1px solid var(--line);
        padding: 26px 0;
        margin-top: 40px;
        color: var(--muted);
        font-size: 12px;
        display: flex;
        justify-content: space-between;
        gap: 20px;
      }
      .sr-only {
        position: absolute;
        width: 1px;
        height: 1px;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
      }
      .skip-link {
        position: absolute;
        left: 12px;
        top: -100px;
        background: var(--accent);
        color: #08211c;
        padding: 12px;
        z-index: 100;
      }
      .skip-link:focus {
        top: 12px;
      }
      .guide-card details {
        margin: 20px 0;
      }
      .guide-card summary {
        cursor: pointer;
        color: #a9c9ff;
        font-size: 14px;
      }
      .guide-card ul {
        padding-left: 20px;
      }
      @media (max-width: 850px) {
        .shell {
          padding: 0 22px;
        }
        .hero {
          grid-template-columns: 1fr;
          gap: 25px;
          padding-top: 44px;
        }
        .hero-aside {
          border-left: 0;
          border-top: 1px solid var(--line);
          padding: 22px 0 0;
        }
        .hero-aside ol {
          display: flex;
          justify-content: space-between;
          gap: 15px;
        }
        .runtime-grid {
          grid-template-columns: repeat(3, 1fr);
        }
        .setup-grid {
          grid-template-columns: 1fr;
        }
        .resources {
          grid-template-columns: 1fr;
        }
        .identity-card,
        .guide-card {
          padding: 22px;
        }
        .section-head {
          display: block;
        }
        .section-head p {
          margin-top: 6px;
        }
      }
      @media (max-width: 480px) {
        .shell {
          padding: 0 16px;
        }
        .nav {
          height: 68px;
        }
        .nav-links {
          gap: 12px;
        }
        .nav-links .docs-link {
          display: none;
        }
        .brand {
          font-size: 17px;
        }
        .runtime-grid {
          grid-template-columns: repeat(2, 1fr);
          gap: 9px;
        }
        .runtime-option span {
          padding: 17px 13px;
        }
        .hero-aside li {
          gap: 7px;
          font-size: 11px;
        }
        .hero p {
          font-size: 15px;
        }
        .identity-card,
        .guide-card {
          padding: 18px;
        }
        footer {
          flex-direction: column;
        }
        h1 {
          font-size: 38px;
        }
        .guide-card h2 {
          font-size: 20px;
        }
      }
      @media (prefers-reduced-motion: reduce) {
        html {
          scroll-behavior: auto;
        }
      }
      .guide-card pre.setup-prompt {
        white-space: pre-wrap;
        overflow-wrap: anywhere;
        font-family: inherit;
        font-size: 14px;
        line-height: 1.8;
      }

/* Setup is the primary action; protocol details stay one step away. */
body { background: radial-gradient(ellipse at 85% 0, #17312d66, transparent 38%), var(--bg); }
.topbar { background: #0b1018cc; }
.hero { padding: 52px 0 38px; gap: 56px; }
.hero h1 { font-size: clamp(35px,4.6vw,54px); letter-spacing: -1.8px; }
.hero .eyebrow { display: inline-flex; align-items: center; gap: 8px; }
.hero .eyebrow:before { content: ''; width: 7px; height: 7px; background: var(--accent); border-radius: 50%; }
.hero-aside { border: 1px solid var(--line); border-radius: 18px; padding: 24px; background: #121c26; box-shadow: 0 16px 55px #0002; }
.hero-aside li { align-items: flex-start; }
.hero-aside li + li { margin-top: 4px; }
.step-no { display: grid; place-items: center; border: 1px solid #3c6158; border-radius: 50%; width: 30px; height: 30px; flex-shrink: 0; }
.runtime-grid { gap: 10px; margin-bottom: 22px; }
.runtime-option span { padding: 17px 18px; gap: 4px; transition: border-color .15s, background .15s; }
.runtime-option:hover span { border-color: #718a87; }
.runtime-option b { font-size: 15px; }
.runtime-option small { font-size: 12px; }
.runtime-option input:checked + span { background: #17312c; box-shadow: inset 0 0 0 1px #98edcd77; }
.runtime-option:last-child span { border-style: dashed; }
.quickstart { border: 1px solid #497765; border-radius: 20px; padding: 28px 30px; margin-bottom: 24px; background: linear-gradient(120deg,#17302b,#14202c); }
.quickstart-top { display: flex; justify-content: space-between; align-items: center; gap: 28px; }
.quickstart h2 { font-size: 24px; margin: 0 0 8px; letter-spacing: -.5px; }
.quickstart p { color: #bacbc9; margin: 0; font-size: 14px; max-width: 650px; }
.quickstart .eyebrow { font-size: 10px; margin-bottom: 9px; }
.quickstart .primary-btn { white-space: nowrap; font-size: 14px; min-height: 48px; padding: 12px 20px; box-shadow: 0 4px 14px #0002; }
.quickstart-details { margin-top: 20px; padding-top: 14px; border-top: 1px solid #426052; }
.quickstart summary { color: #c3d7d0; cursor: pointer; font-size: 13px; }
.quickstart pre { margin: 16px 0 0; padding: 20px; white-space: pre-wrap; overflow-wrap: anywhere; font-family: inherit; font-size: 13px; line-height: 1.8; border-radius: 12px; background: #0b151c; color: #d4e2dc; max-height: 380px; overflow-y: auto; }
.copy-status { color: var(--accent); font-size: 13px; margin-top: 8px; min-height: 0; }
.copy-status:empty { display: none; }
.setup-grid > .guide-card { grid-column: 1; grid-row: 1; }
.setup-grid > .identity-card { grid-column: 2; grid-row: 1; }
.identity-card { padding: 23px; background: #111a25; }
.identity-card h2 { font-size: 19px; margin: 0 0 8px; }
.identity-card .eyebrow { margin-bottom: 10px; }
.identity-card summary { cursor: pointer; font-size: 14px; }
.identity-card .signed-note { padding: 0; background: none; }
.signed-note .button-link { background: transparent; color: var(--accent); border-color: #496158; }
.guide-card { padding: 26px; }
.guide-card > .eyebrow { margin-bottom: 10px; }
.verify-heading { font-size: 20px; margin: 0 0 16px; }
.verify-list { list-style: none; padding: 0 !important; margin: 0; display: grid; gap: 16px; }
.verify-list li { display: flex; gap: 13px; font-size: 14px; }
.verify-list .step-no { width: 25px; height: 25px; font-size: 11px; }
.verify-list b { display: block; font-weight: 500; }
.verify-list small { display: block; color: var(--muted); font-size: 12px; margin-top: 3px; }
.guide-card details.manual-guide { border-top: 1px solid var(--line); margin: 24px 0 0; padding-top: 20px; }
.manual-guide > summary { color: var(--text); font-size: 14px; min-height: 28px; }
.manual-guide > section { margin-top: 20px; padding: 18px 20px; border: 1px solid var(--line); border-radius: 12px; background: #0e1822; }
.manual-guide h3 { margin: 0 0 8px; font-size: 17px; font-weight: 500; }
.manual-guide > section p { margin: 0; line-height: 1.8; }
.manual-guide > section .manual-command-note { margin-top: 16px; color: var(--muted); font-size: 13px; }
.manual-guide .manual-command { white-space: pre-wrap; overflow-wrap: anywhere; font-size: 12px; margin: 12px 0 0; }
.manual-reference { margin-top: 20px; }
.manual-docs-link { display: inline-block; padding: 7px 0; font-size: 14px; font-weight: 500; color: var(--accent); }
.manual-reference p { color: var(--muted); font-size: 13px; margin: 4px 0 0; }
.manual-check { margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--line); }
.manual-check p { color: var(--muted); font-size: 12px; margin: 0; }
.manual-check pre { margin: 12px 0 0; white-space: pre-wrap; overflow-wrap: anywhere; }
.resources .faq-item { margin: 0; }
.faq-item summary { color: var(--text); padding: 4px 0; }
.faq-item p { padding: 0 0 0 16px; margin: 10px 0 0; }
.path-flow { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 18px 0; color: var(--muted); font-size: 12px; }
.path-flow span { background: #1a2a37; border-radius: 6px; padding: 5px 9px; color: #d0dce8; }
.guide-card .capability-note { border-left: 2px solid #8aace2; padding: 10px 14px; background: #182436; color: #c8d7ed; }
.security-note { border: 0; border-top: 1px solid var(--line); border-radius: 0; padding: 20px 0 0; font-size: 12px; }
.resources { margin-top: 32px; }
@media(max-width:850px) {
  .hero { grid-template-columns: 1fr; gap: 22px; padding-top: 34px; }
  .hero-aside { padding: 16px 18px; }
  .hero-aside li + li { margin-top: 0; }
  .hero-aside ol { align-items: center; }
  .runtime-grid { grid-template-columns: repeat(3,1fr); }
  .setup-grid { grid-template-columns: 1fr; }
  .setup-grid > .guide-card,.setup-grid > .identity-card { grid-column: auto; grid-row: auto; }
  .setup-grid > .guide-card { order: -1; }
  .quickstart-top { align-items: flex-start; }
}
@media(max-width:540px) {
  .runtime-grid { grid-template-columns: repeat(2,1fr); }
  .runtime-option:last-child { grid-column: 1/-1; }
  .runtime-option span { padding: 15px 13px; }
  .hero h1 { font-size: 35px; letter-spacing: -1px; }
  .hero-aside { padding: 16px 12px; }
  .hero-aside li { flex-direction: column; gap: 7px; font-size: 11px; }
  .quickstart { padding: 22px 19px; }
  .quickstart-top { flex-direction: column; gap: 18px; }
  .quickstart .primary-btn { width: 100%; }
  .quickstart h2 { font-size: 21px; }
  .quickstart pre { padding: 14px; font-size: 13px; }
  .manual-guide > section { padding: 16px; }
  .manual-docs-link { display: block; min-height: 44px; }
  .manual-guide > summary { min-height: 44px; }
}
@media(prefers-reduced-motion:reduce) { * { transition: none !important; } }
/* Keep the primary action close to the runtime chooser on laptop screens. */
@media(min-width:851px) {
  .hero { padding: 32px 0 24px; }
  .hero-aside { padding: 20px 24px; }
  .hero-aside ol { gap: 14px; }
  .hero h1 { font-size: clamp(36px,4.2vw,50px); margin-bottom: 16px; }
  .hero p { font-size: 16px; }
  .runtime-option:last-child { grid-column: span 2; }
}

.quickstart-launch-link { display: inline-block; margin-top: 16px; color: #a8c4ff; font-size: 14px; }
.quickstart-launch-link[hidden] { display: none; }
#guide-claude { scroll-margin-top: 24px; }