/* A brief moves from the real copy field into an illustrated agent setup. */
#landing .landing-setup { overflow: visible; }
#landing .setup-scroll-track { position: relative; scroll-margin-top: 105px; }
#landing .setup-scroll-track.is-pinned { height: var(--setup-track-height); }
#landing .setup-scroll-track.is-pinned .setup-walkthrough { position: sticky; top: var(--setup-pin-top); }
#landing .setup-walkthrough { --setup-progress: 0; position: relative; }
#landing .setup-walkthrough .section-heading { margin-bottom: 30px; }
#landing .setup-walkthrough .section-heading h2 { font-size: clamp(34px, 4.3vw, 54px); }
#landing .setup-walkthrough .section-heading > p { margin-top: 14px; }
#landing .setup-workbench { display: grid; grid-template-columns: minmax(0, 1.1fr) 80px minmax(0, 1fr); align-items: center; }
#landing .setup-walkthrough .setup-prompt-panel { padding: 26px; margin: 0; width: 100%; text-align: left; background: var(--surface); border-color: var(--line); }
#landing .setup-walkthrough .setup-prompt-panel label { font-size: 20px; letter-spacing: -.02em; }
#landing .setup-walkthrough .setup-prompt-field { min-height: 170px; height: 170px; margin: 18px 0; padding: 14px 16px; font-size: 13px; line-height: 1.65; resize: vertical; }
#landing .setup-walkthrough .setup-prompt-panel > .button { min-width: 0; min-height: 48px; width: 100%; padding: 12px 16px; }
#landing .setup-transfer { height: 80px; position: relative; color: var(--accent); }
#landing .setup-transfer > svg { width: 100%; height: 100%; fill: none; }
#landing .setup-transfer-wire { stroke: var(--line); stroke-width: 1.5; }
#landing .setup-transfer-signal { stroke: var(--accent); stroke-width: 2; stroke-dasharray: 12 100; opacity: 0; }
#landing .setup-packet { position: absolute; top: 50%; left: 50%; display: flex; align-items: center; justify-content: center; width: 32px; height: 36px; background: var(--surface); border: 1px solid var(--accent); border-radius: 6px; transform: translate(-50%, -50%); }
#landing .setup-packet svg { width: 21px; height: 21px; }
#landing .setup-agent { min-width: 0; margin: 0; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); overflow: hidden; }
#landing .setup-agent figcaption { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 17px 20px; border-bottom: 1px solid var(--line); color: var(--ink); font-size: 15px; }
#landing .setup-agent figcaption > span:first-child { display: flex; align-items: center; gap: 10px; font-weight: 600; }
#landing .setup-agent figcaption > span:last-child { font-size: 12px; color: var(--muted); }
#landing .setup-agent svg { width: 19px; height: 19px; flex: 0 0 auto; }
#landing .setup-agent-body { padding: 22px 20px; }
#landing .setup-agent-brief { display: flex; align-items: center; gap: 10px; padding-bottom: 18px; border-bottom: 1px solid var(--line); color: var(--accent); }
#landing .setup-agent-brief code { font-size: 12px; line-height: 1.6; overflow-wrap: anywhere; color: var(--ink); }
#landing .setup-send { margin-left: auto; }
#landing .setup-checks { display: grid; gap: 13px; padding: 18px 0 0; margin: 0; list-style: none; font-size: 14px; }
#landing .setup-check { display: flex; align-items: center; gap: 10px; }
#landing .setup-check svg { color: var(--accent); width: 17px; height: 17px; }
#landing .setup-check--approval { color: var(--accent); }
#landing .setup-agent-result { display: flex; align-items: center; gap: 10px; border-top: 1px solid var(--line); padding: 14px 20px; font-size: 13px; color: var(--accent); }
#landing .setup-story { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 22px; margin-top: 24px; }
#landing .setup-steps { display: flex; gap: 4px; }
#landing .setup-steps button, #landing .setup-follow { min-height: 44px; border: 0; background: transparent; color: var(--muted); font: inherit; font-size: 13px; cursor: pointer; }
#landing .setup-steps button { padding: 10px 12px; border-radius: 7px; font-variant-numeric: tabular-nums; }
#landing .setup-steps button span { margin-left: 5px; }
#landing .setup-steps button[aria-pressed="true"] { color: var(--accent); background: #302639; }
#landing .setup-steps button:hover, #landing .setup-follow:hover { color: var(--ink); }
#landing .setup-follow { display: flex; align-items: center; justify-content: flex-end; gap: 7px; padding: 10px 0 10px 8px; white-space: nowrap; }
#landing .setup-follow svg { width: 17px; height: 17px; }
#landing .setup-follow:disabled { cursor: default; color: var(--muted); }
#landing .setup-captions { display: grid; align-items: center; color: var(--muted); font-size: 13px; line-height: 1.6; }
#landing .setup-captions p { grid-area: 1 / 1; margin: 0; visibility: hidden; }
#landing .setup-walkthrough[data-phase="copy"] [data-setup-caption="copy"],
#landing .setup-walkthrough[data-phase="paste"] [data-setup-caption="paste"],
#landing .setup-walkthrough[data-phase="connect"] [data-setup-caption="connect"] { visibility: visible; }
#landing .setup-walkthrough > .setup-guide-note { text-align: center; color: var(--muted); font-size: 12px; margin: 18px auto 0; }

/* Scroll progress, never a timer, moves the brief and draws the verification sequence. */
#landing .setup-walkthrough.scroll-linked {
  --brief-travel: clamp(0, calc((var(--setup-progress) - .1) / .32), 1);
  --brief-arrive: clamp(0, calc((var(--setup-progress) - .32) / .12), 1);
  --guide-read: clamp(0, calc((var(--setup-progress) - .43) / .1), 1);
  --project-approved: clamp(0, calc((var(--setup-progress) - .55) / .1), 1);
  --memory-configured: clamp(0, calc((var(--setup-progress) - .68) / .1), 1);
  --memory-verified: clamp(0, calc((var(--setup-progress) - .82) / .1), 1);
}
#landing .setup-walkthrough.scroll-linked .setup-packet { transform: translate(calc(-50% + (var(--brief-travel) - .5) * 66px), -50%); opacity: calc(1 - var(--brief-arrive)); }
#landing .setup-walkthrough.scroll-linked .setup-transfer-signal { stroke-dashoffset: calc(var(--brief-travel) * -110); opacity: 1; }
#landing .setup-walkthrough.scroll-linked .setup-agent-brief { opacity: calc(.22 + var(--brief-arrive) * .78); transform: translateY(calc((1 - var(--brief-arrive)) * 8px)); }
#landing .setup-walkthrough.scroll-linked .setup-check--guide { opacity: calc(.22 + var(--guide-read) * .78); }
#landing .setup-walkthrough.scroll-linked .setup-check--approval { opacity: calc(.22 + var(--project-approved) * .78); }
#landing .setup-walkthrough.scroll-linked .setup-check--connect { opacity: calc(.22 + var(--memory-configured) * .78); }
#landing .setup-walkthrough.scroll-linked .setup-check--verify,
#landing .setup-walkthrough.scroll-linked .setup-agent-result { opacity: calc(.22 + var(--memory-verified) * .78); }
#landing .setup-walkthrough.scroll-linked .setup-check svg { clip-path: inset(0 calc((1 - var(--guide-read)) * 100%) 0 0); }
#landing .setup-walkthrough.scroll-linked .setup-check--approval svg { clip-path: inset(0 calc((1 - var(--project-approved)) * 100%) 0 0); }
#landing .setup-walkthrough.scroll-linked .setup-check--connect svg { clip-path: inset(0 calc((1 - var(--memory-configured)) * 100%) 0 0); }
#landing .setup-walkthrough.scroll-linked .setup-check--verify svg { clip-path: inset(0 calc((1 - var(--memory-verified)) * 100%) 0 0); }

@media (max-width: 1000px) {
  #landing .setup-workbench { grid-template-columns: minmax(0, 1fr) 48px minmax(0, 1fr); }
  #landing .setup-story { gap: 12px; }
  #landing .setup-follow span { display: none; }
  #landing .setup-follow { width: 44px; justify-content: center; padding: 10px; }
}
@media (max-width: 760px) {
  #landing .setup-scroll-track { scroll-margin-top: 90px; }
  #landing .setup-walkthrough .section-heading { margin-bottom: 20px; }
  #landing .setup-walkthrough .section-heading h2 { font-size: clamp(29px, 7.4vw, 38px); }
  #landing .setup-walkthrough .section-heading > p { font-size: 14px; line-height: 1.5; margin-top: 10px; }
  #landing .setup-workbench { grid-template-columns: minmax(0, 1fr); }
  #landing .setup-walkthrough .setup-prompt-panel { padding: 16px; border-radius: 12px 12px 0 0; }
  #landing .setup-walkthrough .setup-prompt-panel label { font-size: 17px; }
  #landing .setup-walkthrough .setup-prompt-field { min-height: 105px; height: 105px; padding: 10px 12px; font-size: 13px; line-height: 1.55; margin: 12px 0; }
  #landing .setup-walkthrough .setup-prompt-panel > .button { min-height: 44px; font-size: 14px; padding-block: 10px; }
  #landing .setup-transfer { height: 32px; }
  #landing .setup-transfer > svg { position: absolute; width: 32px; height: 48px; top: -8px; left: calc(50% - 16px); transform: rotate(90deg); }
  #landing .setup-packet { width: 24px; height: 26px; }
  #landing .setup-packet svg { width: 16px; height: 16px; }
  #landing .setup-walkthrough.scroll-linked .setup-packet { transform: translate(-50%, calc(-50% + (var(--brief-travel) - .5) * 20px)); }
  #landing .setup-agent { border-radius: 0 0 12px 12px; }
  #landing .setup-agent figcaption { padding: 10px 14px; font-size: 13px; }
  #landing .setup-agent figcaption > span:last-child { font-size: 11px; }
  #landing .setup-agent-body { padding: 12px 14px; }
  #landing .setup-agent-brief { padding-bottom: 10px; gap: 8px; }
  #landing .setup-agent-brief code { font-size: 11px; }
  #landing .setup-checks { grid-template-columns: 1fr 1fr; gap: 10px 12px; font-size: 11px; padding-top: 12px; }
  #landing .setup-check { gap: 6px; align-items: flex-start; line-height: 1.5; }
  #landing .setup-check svg { width: 14px; height: 16px; }
  #landing .setup-agent-result { padding: 9px 14px; font-size: 11px; }
  #landing .setup-story { grid-template-columns: 1fr 44px; gap: 4px 8px; margin-top: 12px; }
  #landing .setup-captions { grid-column: 1 / -1; grid-row: 2; min-height: 37px; font-size: 12px; }
  #landing .setup-steps button { padding-inline: 11px; }
  #landing .setup-walkthrough > .setup-guide-note { margin-top: 10px; font-size: 11px; line-height: 1.6; }
}
@media (prefers-reduced-motion: reduce) {
  #landing .setup-scroll-track.is-pinned { height: auto; }
  #landing .setup-scroll-track.is-pinned .setup-walkthrough { position: relative; top: auto; }
  #landing .setup-walkthrough.scroll-linked :is(.setup-packet, .setup-agent-brief) { transform: none; }
  #landing .setup-walkthrough.scroll-linked :is(.setup-agent-brief, .setup-check, .setup-agent-result) { opacity: 1; }
  #landing .setup-walkthrough.scroll-linked .setup-check svg { clip-path: none; }
  #landing .setup-transfer-signal, #landing .setup-packet { display: none; }
}