/* Tokens from design.md (Stego design system, 5 Oct 2026). */
  :root {
    --canvas: #FBF9FD;
    --surface: #FFFFFF;
    --surface-lavender: #F0EAFB;
    --ink: #3D304D;
    --ink-strong: #2A1F3D;
    --ink-muted: #6A5A78;
    --primary: #8062CE;
    --primary-hover: #7254BE;
    --edge: #D8C8F0;
    --hairline: #EEE6F8;
    --focus: #6546AB;
    --note-lavender: #EADFF9;
    --note-vanilla: #F9ECD7;
    --note-peach: #F8DFD8;
    --note-periwinkle: #E3E7F9;
    --note-mint: #E2F0E7;
    --shadow-note: 0 3px 8px rgb(79 54 126 / 6%), 0 10px 24px rgb(79 54 126 / 5%);
    --shadow-float: 0 6px 20px rgb(79 54 126 / 8%);
    --shadow-stage: 0 30px 70px rgb(79 54 126 / 10%), 0 4px 14px rgb(79 54 126 / 5%);
    --ease: cubic-bezier(.32, .72, 0, 1);
    --radius-note: 12px;
    --radius-ctl: 12px;
  }

  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    margin: 0;
    background: var(--canvas);
    color: var(--ink);
    font-family: "Nunito", ui-rounded, system-ui, sans-serif;
    font-size: 17px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }
  img { display: block; max-width: 100%; }
  a { color: inherit; }
  h1, h2, h3 { text-wrap: balance; }
  :focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; border-radius: 10px; }
  [hidden] { display: none !important; }
  .form-success:focus { outline: none; }
  .ph, .ph-fill { line-height: 1; }

  .wrap { width: min(1180px, 100% - 32px); margin-inline: auto; }

  /* ---------- Buttons (preferred-buttons reference) ---------- */
  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    min-height: 48px; padding: 0 24px;
    font: inherit; font-weight: 700; font-size: 16px;
    border-radius: 999px; border: 1.5px solid transparent;
    cursor: pointer; text-decoration: none; white-space: nowrap;
    transition: background-color .2s var(--ease), transform .2s var(--ease), border-color .2s var(--ease);
  }
  .btn:active { transform: translateY(1px) scale(.985); }
  .btn-primary {
    background: var(--primary); color: #fff;
    box-shadow: inset 0 1px 0 rgb(255 255 255 / 22%), 0 2px 6px rgb(79 54 126 / 16%);
  }
  .btn-primary:hover { background: var(--primary-hover); }
  .btn-secondary { background: var(--surface); color: var(--primary); border-color: var(--edge); }
  .btn-secondary:hover { border-color: var(--primary); }
  .btn-sm { min-height: 44px; padding: 0 18px; font-size: 15px; }
  .btn[aria-busy="true"] { opacity: .8; cursor: progress; }

  /* ---------- Nav ---------- */
  .nav { display: flex; align-items: center; justify-content: space-between; height: 76px; }
  .brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
  .brand img { width: 62px; height: auto; }
  .wordmark { font-weight: 800; font-size: 29px; letter-spacing: -.01em; color: var(--ink-strong); line-height: 1; padding-bottom: 4px; }
  .nav-links { display: flex; align-items: center; gap: 28px; }
  .nav-links a.plain { text-decoration: none; font-weight: 600; color: var(--ink); }
  .nav-links a.plain:hover { color: var(--primary); }

  /* ---------- Hero ---------- */
  .hero { text-align: center; padding: 56px 0 0; }
  .hero h1 {
    margin: 0 auto;
    font-size: clamp(40px, 6.6vw, 78px);
    line-height: 1.04; letter-spacing: -.025em; font-weight: 900;
    color: var(--ink-strong);
  }
  .hero h1 span { color: var(--primary); }
  .lede {
    margin: 22px auto 0; max-width: 31em;
    font-size: clamp(18px, 2vw, 21px); line-height: 1.5; color: var(--ink-muted);
  }

  .signup-block { margin: 36px auto 0; max-width: 520px; }
  .signup-label { display: block; font-weight: 700; font-size: 15px; color: var(--ink); margin-bottom: 10px; }
  .signup {
    display: flex; gap: 6px; align-items: center;
    background: var(--surface); border: 1.5px solid var(--edge);
    border-radius: 999px; padding: 6px 6px 6px 20px;
    box-shadow: var(--shadow-float);
    transition: border-color .2s var(--ease);
  }
  .signup:focus-within { border-color: var(--primary); }
  .signup > .ph { font-size: 20px; color: var(--ink-muted); }
  .signup input {
    flex: 1; min-width: 0; border: 0; outline: none; background: transparent;
    font: inherit; font-size: 17px; color: var(--ink-strong); padding: 10px 4px;
  }
  .signup input::placeholder { color: #7F7090; }
  .signup.invalid { border-color: #B23A55; }
  .form-error { margin: 10px 0 0; font-size: 15px; font-weight: 700; color: #A8334A; min-height: 1.4em; }
  .form-success {
    display: none; align-items: center; gap: 14px; text-align: left;
    background: var(--surface); border: 1.5px solid var(--edge); border-radius: 24px; padding: 16px 20px;
    font-weight: 600; color: var(--ink-strong); box-shadow: var(--shadow-float);
  }
  .form-success { align-items: flex-start; }
  .form-success img { width: 54px; flex: none; margin-top: 4px; }
  .form-success b { display: block; font-size: 18px; }
  .seg-q { margin: 4px 0 0; font-weight: 600; color: var(--ink); }
  .chips { display: flex; flex-wrap: wrap; gap: 8px; }
  .chips button {
    font: inherit; font-size: 14.5px; font-weight: 600; color: var(--ink-strong);
    min-height: 40px; padding: 0 14px; border-radius: 999px; cursor: pointer;
    background: var(--surface); border: 1.5px solid var(--edge);
    transition: background-color .2s var(--ease), border-color .2s var(--ease);
  }
  .chips button:hover { border-color: var(--primary); }
  .seg-label { margin: 12px 0 8px; font-size: 14px; font-weight: 700; color: var(--ink-muted); }
  .chips button[aria-checked="true"] { background: var(--surface-lavender); border-color: var(--primary); color: var(--focus); }
  .seg-actions { display: flex; align-items: center; gap: 14px; margin-top: 14px; }
  .seg-actions .btn:disabled { opacity: .5; cursor: not-allowed; }
  .link { font: inherit; font-weight: 600; font-size: 15px; color: var(--ink-muted); background: none; border: 0; cursor: pointer; text-decoration: underline; text-underline-offset: 3px; min-height: 40px; }
  .seg-thanks { margin: 6px 0 0; color: var(--ink-muted); }
  .form-success.show { display: flex; }

  /* ---------- Live board preview ---------- */
  .try-hint {
    display: inline-flex; align-items: center; gap: 8px;
    font-weight: 600; font-size: 15px; color: var(--ink-muted);
    margin: 52px 0 16px;
  }
  .try-hint .ph { color: var(--primary); font-size: 18px; }
  .stage {
    position: relative;
    background: var(--surface);
    border-radius: 32px;
    padding: 12px;
    box-shadow: var(--shadow-stage);
    border: 1px solid var(--hairline);
    text-align: left;
  }
  .board {
    position: relative; overflow: hidden;
    background: radial-gradient(circle, #E9E1F5 1.1px, transparent 1.3px) 0 0 / 26px 26px, var(--canvas);
    border-radius: 22px;
    min-height: 620px;
    padding: 16px;
    touch-action: pan-y;
  }
  .float { background: var(--surface); border-radius: 24px; box-shadow: var(--shadow-float); }
  .topbar { display: flex; align-items: center; gap: 16px; padding: 10px 12px 10px 18px; }
  .topbar .brand img { width: 46px; }
  .topbar .wordmark { font-size: 22px; }
  .topbar .divider { width: 1px; height: 26px; background: var(--edge); }
  .topbar .title { font-weight: 700; font-size: 18px; color: var(--ink-strong); }
  .avatars { margin-left: auto; display: flex; gap: 8px; }
  .avatar {
    width: 34px; height: 34px; border-radius: 50%;
    display: grid; place-items: center;
    background: var(--surface-lavender); color: var(--ink-strong);
    font-weight: 700; font-size: 14px;
  }
  .topbar .btn-sm { min-height: 40px; }

  .tools { position: absolute; left: 16px; top: 96px; display: flex; flex-direction: column; gap: 6px; padding: 8px; }
  .tool { width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; color: var(--ink); font-size: 21px; }
  .tool.on { background: var(--surface-lavender); color: var(--focus); }
  .zoom { position: absolute; left: 16px; bottom: 16px; display: flex; align-items: center; gap: 14px; padding: 10px 16px; font-weight: 700; font-size: 14px; }

  .canvas-area {
    position: relative;
    margin: 18px 0 0 84px;
    display: grid; grid-template-columns: auto auto; justify-content: space-evenly; align-items: start; gap: 28px 40px;
    padding-bottom: 90px;
  }

  /* Stego asks capsule (selected compact treatment, tail nudged right) */
  .stego-asks {
    grid-column: 1 / -1; justify-self: start;
    position: relative;
    display: flex; align-items: center; gap: 12px;
    background: var(--surface-lavender);
    padding: 10px 22px 10px 14px;
    border-radius: 28px;
    box-shadow: 0 4px 14px rgb(79 54 126 / 7%);
    max-width: 100%;
  }
  .stego-asks::after {
    content: ""; position: absolute; left: 62px; bottom: -8px;
    width: 18px; height: 18px; background: var(--surface-lavender);
    border-radius: 0 0 6px 0; transform: rotate(45deg);
  }
  .stego-asks img { width: 58px; flex: none; }
  .stego-asks small { display: block; font-size: 12.5px; font-weight: 700; color: var(--focus); }
  .stego-asks strong { display: block; font-size: 17px; color: var(--ink-strong); line-height: 1.3; }
  .stego-asks.pop { animation: pop .5s var(--ease); }
  @keyframes pop { 0% { transform: scale(.95); opacity: .6; } 100% { transform: none; opacity: 1; } }

  /* Theme contour: organic outline drawn around the real group, sized to its content box. */
  .theme { position: relative; padding: 48px 54px 52px; justify-self: start; width: fit-content; }
  .theme .contour {
    position: absolute; inset: 0; width: 100%; height: 100%;
    overflow: visible; pointer-events: none;
  }
  .theme .contour path {
    fill: none; stroke: #DCCDF2; stroke-width: 1.5;
    vector-effect: non-scaling-stroke; stroke-linejoin: round;
  }
  .theme h3 { margin: 0; font-size: 21px; line-height: 1.3; color: var(--ink-strong); }
  .theme .proposed { font-size: 14px; font-weight: 600; color: var(--focus); min-height: 1.4em; display: block; }
  .notes { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 14px; }
  .note {
    position: relative;
    width: 200px; min-height: 112px;
    padding: 16px 18px 14px; border-radius: var(--radius-note);
    box-shadow: var(--shadow-note);
    font-size: 16px; line-height: 1.45; color: var(--ink-strong);
    display: flex; flex-direction: column; justify-content: space-between; gap: 14px;
    transition: box-shadow .2s var(--ease), scale .2s var(--ease);
  }
  .note cite { font-style: normal; font-size: 13.5px; color: var(--ink-muted); }
  .note.lav { background: var(--note-lavender); }
  .note.van { background: var(--note-vanilla); }
  .note.pea { background: var(--note-peach); }
  .note.per { background: var(--note-periwinkle); }
  .note.min { background: var(--note-mint); }
  .notes.pair { display: grid; grid-template-columns: repeat(2, 210px); gap: 18px 20px; }
  .notes.pair .centered { grid-column: 1 / -1; justify-self: center; }
  .notes.stack { display: grid; gap: 18px; padding-right: 20px; }
  .notes.stack .note:nth-child(2) { margin-left: 20px; }
  .canvas-area .note { width: 210px; }
  .note.flag { box-shadow: var(--shadow-note), 0 0 0 2.5px var(--primary); }
  @media (pointer: fine) {
    .board .canvas-area .note { cursor: grab; user-select: none; }
    .board .canvas-area .note:hover { box-shadow: 0 6px 14px rgb(79 54 126 / 9%), 0 16px 32px rgb(79 54 126 / 7%); }
    .board .canvas-area .note.dragging { cursor: grabbing; scale: 1.03; z-index: 2; box-shadow: 0 10px 22px rgb(79 54 126 / 12%), 0 24px 48px rgb(79 54 126 / 9%); transition: none; }
  }

  /* Host insights */
  .insights-toggle {
    position: absolute; right: 16px; top: 96px; z-index: 3;
    display: flex; align-items: center; gap: 10px;
    min-height: 44px; padding: 6px 10px 6px 16px; border: 0; cursor: pointer;
    font: inherit; font-weight: 600; font-size: 15px; color: var(--ink-strong);
  }
  .insights-toggle .ph-fill { font-size: 18px; }
  .insights-toggle .count {
    min-width: 26px; height: 26px; border-radius: 999px;
    background: var(--surface-lavender); color: var(--focus);
    display: grid; place-items: center; font-size: 13px; font-weight: 800;
  }
  .insights-toggle .sep { width: 1px; height: 20px; background: var(--edge); }
  .insights-toggle .ph-caret-down { font-size: 18px; transition: transform .3s var(--ease); }
  .insights-toggle[aria-expanded="true"] .ph-caret-down { transform: rotate(180deg); }

  .insights-panel {
    position: absolute; right: 16px; top: 152px; z-index: 2;
    width: 340px; padding: 22px; border-radius: 24px;
    opacity: 0; transform: translateY(-8px) scale(.98); pointer-events: none; visibility: hidden;
    transition: opacity .25s var(--ease), transform .3s var(--ease), visibility .3s;
  }
  .insights-panel.open { opacity: 1; transform: none; pointer-events: auto; visibility: visible; }
  .insights-panel .private { font-size: 13px; font-weight: 700; color: var(--primary); display: flex; align-items: center; gap: 6px; }
  .insights-panel h4 { margin: 8px 0; font-size: 18px; line-height: 1.35; color: var(--ink-strong); }
  .insights-panel p { margin: 0; font-size: 15px; color: var(--ink-muted); line-height: 1.5; }
  .evidence { display: flex; gap: 8px; margin: 14px 0; }
  .evidence button {
    font: inherit; font-size: 13px; font-weight: 600; padding: 6px 12px; border-radius: 10px; border: 0;
    color: var(--ink-strong); cursor: pointer; min-height: 32px;
  }
  .suggest {
    background: var(--canvas); border: 1px solid var(--hairline); border-radius: 16px;
    padding: 12px 14px; margin-bottom: 16px; font-size: 15px; color: var(--ink-strong); font-weight: 600;
  }
  .suggest small { display: block; font-weight: 700; font-size: 12.5px; color: var(--ink-muted); margin-bottom: 2px; }
  .panel-actions { display: grid; gap: 10px; }
  .panel-actions .btn { width: 100%; border-radius: var(--radius-ctl); min-height: 44px; }
  .panel-empty { text-align: center; padding: 10px 4px 4px; }
  .panel-empty img { width: 70px; margin: 0 auto 6px; }

  .dock {
    position: absolute; left: 50%; bottom: 16px; transform: translateX(-50%);
    display: flex; align-items: center; gap: 4px; padding: 6px;
    background: var(--surface-lavender); border-radius: 999px;
    box-shadow: var(--shadow-float);
    font-weight: 600; font-size: 15px; white-space: nowrap;
  }
  .dock .step { padding: 9px 18px; border-radius: 999px; color: var(--focus); }
  .dock .step.on { background: var(--primary); color: #fff; }
  .dock .timer { display: flex; align-items: center; gap: 8px; padding: 0 16px 0 14px; margin-left: 6px; border-left: 1px solid var(--edge); color: var(--focus); font-variant-numeric: tabular-nums; font-weight: 700; }
  .dock .timer .ph { font-size: 19px; }

  /* ---------- Shared section bits ---------- */
  section { padding: 136px 0 0; }
  h2 {
    margin: 0; font-size: clamp(32px, 4.2vw, 50px); line-height: 1.08;
    letter-spacing: -.02em; font-weight: 900; color: var(--ink-strong);
  }
  .sub { margin: 16px 0 0; font-size: 19px; color: var(--ink-muted); max-width: 36em; }
  .center { text-align: center; }
  .center .sub { margin-inline: auto; }

  /* ---------- Flow: tabs styled as the product's workflow dock ---------- */
  .flow-tabs {
    display: inline-flex; gap: 4px; padding: 6px; margin: 40px auto 0;
    background: var(--surface-lavender); border-radius: 999px;
  }
  .flow-tabs [role="tab"] {
    font: inherit; font-weight: 700; font-size: 16px; color: var(--focus);
    border: 0; background: transparent; cursor: pointer;
    min-height: 44px; padding: 0 24px; border-radius: 999px;
    transition: background-color .3s var(--ease), color .3s var(--ease);
  }
  .flow-tabs [role="tab"][aria-selected="true"] { background: var(--primary); color: #fff; }
  .flow-panel-shell {
    margin-top: 28px; padding: 10px; border-radius: 36px;
    background: rgb(240 234 251 / 55%); border: 1px solid var(--hairline);
  }
  .flow-panel {
    display: grid; grid-template-columns: 5fr 7fr; gap: 48px; align-items: center;
    background: var(--surface); border-radius: 28px; padding: 44px 48px;
    box-shadow: inset 0 1px 0 #fff, var(--shadow-float);
    min-height: 360px;
  }
  .flow-panel[hidden] { display: none; }
  .flow-panel.enter { animation: rise .45s var(--ease); }
  @keyframes rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
  .flow-panel h3 { margin: 0; font-size: 30px; line-height: 1.15; color: var(--ink-strong); letter-spacing: -.01em; }
  .flow-panel .copy p { margin: 14px 0 0; font-size: 18px; color: var(--ink-muted); }
  .scene {
    background: radial-gradient(circle, #E9E1F5 1.1px, transparent 1.3px) 0 0 / 22px 22px, var(--canvas);
    border-radius: 22px; padding: 26px; display: grid; gap: 12px;
  }
  .chat { font-size: 16px; line-height: 1.45; padding: 12px 16px; border-radius: 18px; max-width: 86%; }
  .chat.stego { background: var(--surface-lavender); color: var(--ink-strong); border-bottom-left-radius: 6px; display: flex; gap: 12px; align-items: flex-start; }
  .chat.stego img { width: 44px; flex: none; margin-top: 3px; }
  .chat.host { background: var(--surface); border: 1px solid var(--hairline); justify-self: end; border-bottom-right-radius: 6px; }
  .chat .who { display: block; font-size: 12.5px; font-weight: 800; color: var(--focus); }
  .scene .row { display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-start; }
  .scene .note { width: 168px; min-height: 0; font-size: 14.5px; padding: 12px 14px; gap: 8px; }
  .scene .note cite { font-size: 12.5px; }
  .scene .theme-name { font-weight: 800; color: var(--ink-strong); font-size: 16px; }
  .scene .theme-name small { display: block; font-weight: 600; font-size: 13px; color: var(--focus); }
  .summary { display: grid; gap: 10px; }
  .summary .item { background: var(--surface); border-radius: 16px; padding: 14px 16px; box-shadow: var(--shadow-note); }
  .summary .item b { display: block; color: var(--ink-strong); font-size: 16px; }
  .summary .item span { font-size: 14px; color: var(--ink-muted); }
  .summary .item.open { background: var(--surface-lavender); box-shadow: none; }

  /* ---------- Division of labour ---------- */
  .labour { display: grid; grid-template-columns: 1fr 1fr; gap: 0; margin-top: 56px; border-radius: 36px; overflow: hidden; border: 1px solid var(--hairline); }
  .labour .side { padding: 40px 44px 44px; }
  .labour .people { background: var(--surface); }
  .labour .stego { background: var(--surface-lavender); }
  .labour h3 { margin: 0 0 24px; font-size: 24px; color: var(--ink-strong); display: flex; align-items: center; gap: 12px; }
  .labour h3 img { width: 52px; }
  .labour .people-notes { display: flex; flex-wrap: wrap; gap: 14px; }
  .labour .people-notes .note { width: auto; max-width: 230px; min-height: 0; padding: 14px 16px; font-weight: 600; }
  .labour .people-notes .note:nth-child(odd) { rotate: -1.2deg; }
  .labour .people-notes .note:nth-child(even) { rotate: 1deg; }
  .labour .stego-says { display: grid; gap: 10px; }
  .labour .stego-says span {
    display: block; width: fit-content; max-width: 100%;
    background: var(--surface); border-radius: 18px 18px 18px 6px;
    padding: 11px 16px; font-weight: 600; color: var(--ink-strong); box-shadow: var(--shadow-note);
  }

  /* ---------- Tailored method ---------- */
  .tailored { display: grid; grid-template-columns: 7fr 5fr; gap: 64px; align-items: center; }
  .tailored .copy { order: 2; }
  .tailored .points { margin: 28px 0 0; padding: 0; list-style: none; display: grid; gap: 14px; }
  .tailored .points li { display: flex; gap: 12px; align-items: flex-start; font-size: 17px; }
  .tailored .points .ph { flex: none; font-size: 22px; color: var(--primary); margin-top: 1px; }

  .review-board { background: var(--surface); border-radius: 32px; padding: 12px; box-shadow: var(--shadow-stage); border: 1px solid var(--hairline); }
  .review-inner { background: radial-gradient(circle, #E9E1F5 1.1px, transparent 1.3px) 0 0 / 26px 26px, var(--canvas); border-radius: 22px; padding: 22px; }
  .review-title { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
  .review-title b { font-size: 17px; color: var(--ink-strong); }
  .pill { font-size: 13px; font-weight: 700; padding: 5px 12px; border-radius: 999px; background: var(--surface-lavender); color: var(--focus); }
  .lanes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 18px; }
  .lane { background: rgb(255 255 255 / 70%); border: 1px solid var(--hairline); border-radius: 18px; padding: 12px; min-height: 200px; }
  .lane h5 { margin: 0 0 10px; font-size: 14px; color: var(--ink-strong); }
  .lane .note { width: 100%; min-height: 0; padding: 10px 12px; font-size: 14px; gap: 6px; margin-bottom: 8px; }
  .lane .note cite { font-size: 12.5px; }
  .lane.empty { border: 1.5px dashed #CDB9EE; background: rgb(240 234 251 / 45%); display: flex; flex-direction: column; }
  .lane.empty .none { margin: auto 0; text-align: center; font-size: 14px; color: var(--ink-muted); }
  .review-ask { margin-top: 18px; }
  .review-ask.stego-asks::after { left: auto; right: 15%; top: -8px; bottom: auto; border-radius: 6px 0 0 0; }

  /* ---------- Final CTA ---------- */
  .final { margin-top: 136px; padding: 0; }
  .final-shell { padding: 10px; border-radius: 48px; background: rgb(240 234 251 / 55%); border: 1px solid var(--hairline); }
  .final-inner {
    background: var(--surface-lavender); border-radius: 40px;
    padding: 72px 32px 64px; text-align: center;
    box-shadow: inset 0 1px 0 rgb(255 255 255 / 70%);
  }
  .final-inner img.mark { width: 128px; margin: 0 auto 18px; transform: scaleX(-1); }
  .final .signup-block { margin-top: 32px; }
  .final .fine { margin: 18px auto 0; font-size: 15px; color: var(--ink-muted); max-width: 30em; }

  footer { padding: 44px 0 40px; display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; color: var(--ink-muted); font-size: 15px; }
  footer .brand img { width: 40px; }
  footer .wordmark { font-size: 20px; }

  .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

  /* ---------- Responsive ---------- */
  @media (max-width: 1040px) {
    .canvas-area { grid-template-columns: 1fr; margin-left: 76px; }
    .board { min-height: 0; }
    .flow-panel { grid-template-columns: 1fr; gap: 28px; padding: 32px; }
    .tailored { grid-template-columns: 1fr; gap: 40px; }
    .tailored .copy { order: 0; }
  }
  @media (max-width: 720px) {
    body { font-size: 16px; }
    .nav { height: 68px; }
    .nav-links a.plain { display: none; }
    .brand img { width: 52px; }
    .wordmark { font-size: 26px; }
    .hero { padding-top: 28px; }
    .signup { flex-direction: column; align-items: stretch; border-radius: 24px; padding: 8px; gap: 8px; }
    .signup > .ph { display: none; }
    .signup input { padding: 12px 14px; }
    .signup .btn { width: 100%; }
    .try-hint { margin-top: 40px; }
    .stage { padding: 8px; border-radius: 24px; }
    .board { padding: 10px; border-radius: 18px; }
    .topbar { padding: 8px 10px 8px 12px; gap: 10px; }
    .topbar .brand, .topbar .divider, .avatars .avatar:nth-child(n+2) { display: none; }
    .topbar .title { font-size: 16px; }
    .tools, .zoom { display: none; }
    .insights-toggle { position: static; margin: 12px 0 0 auto; width: fit-content; }
    .insights-panel { position: relative; right: auto; top: auto; width: auto; display: none; margin-top: 10px; }
    .insights-panel.open { display: block; }
    .canvas-area { margin: 14px 0 0; gap: 8px; padding-bottom: 76px; }
    .theme { padding: 18px 6px; }
    .theme .contour { display: none; }
    .notes, .notes.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
    .canvas-area .note { width: auto; }
    .note { width: auto; min-height: 0; padding: 12px; font-size: 14.5px; gap: 8px; }
    .notes.pair .centered { justify-self: stretch; }
    .canvas-area > .theme + .theme { display: none; }
    .dock { left: 10px; right: 10px; transform: none; justify-content: space-between; font-size: 14px; }
    .dock .step:not(.on) { display: none; }
    section { padding-top: 96px; }
    .flow-tabs { display: flex; width: 100%; }
    .flow-tabs [role="tab"] { flex: 1; padding: 0 8px; font-size: 15px; }
    .flow-panel-shell { padding: 6px; border-radius: 28px; }
    .flow-panel { padding: 24px 18px; border-radius: 22px; }
    .flow-panel h3 { font-size: 24px; }
    .scene { padding: 16px; }
    .scene .note { width: calc(50% - 6px); }
    .chat { max-width: 100%; }
    .labour { grid-template-columns: 1fr; border-radius: 28px; }
    .labour .side { padding: 28px 22px 30px; }
    .lanes { grid-template-columns: 1fr; }
    .lane { min-height: 0; }
    .final { margin-top: 96px; }
    .final-shell { border-radius: 32px; padding: 6px; }
    .final-inner { border-radius: 26px; padding: 48px 18px; }
  }
  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  }

/* Agreed refinements and integration states. */
@font-face{font-family:Nunito;src:url('assets/nunito.ttf') format('truetype');font-weight:200 1000;font-style:normal;font-display:swap}
.nav .wordmark{font-size:38px;font-weight:900;letter-spacing:-1.5px}
.nav-links a.plain{font-size:16px}
#how>h2{font-size:38px;line-height:1.17;letter-spacing:-1px;font-weight:800}
.board{isolation:isolate}.canvas-area{position:relative;isolation:isolate;z-index:0}.insights-panel{z-index:30}.insights-toggle{z-index:31}
.consent{font-size:12px;line-height:1.5;color:var(--ink-muted);margin:12px 0 0}.consent a{color:inherit}.honey{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}
.preview-label{font-size:12px;color:var(--ink-muted);margin:8px 0}.btn:disabled{cursor:wait;opacity:.7}
@media(max-width:620px){.nav .wordmark{font-size:31px}#how>h2{font-size:30px}}

/* Small, dismissible guide to the interactive board. */
.preview-guide { position: relative; width: fit-content; max-width: 100%; margin: 44px auto 18px; z-index: 50; text-align: left; }
.tour-launch { display: flex; align-items: center; gap: 10px; border: 1px solid var(--edge); border-radius: 999px; padding: 12px 18px; background: var(--surface-lavender); color: var(--ink-strong); font: inherit; font-size: 15px; font-weight: 700; cursor: pointer; box-shadow: var(--shadow-float); }
.tour-launch img { flex: none; }
.tour-card { position: absolute; top: calc(100% + 12px); left: 0; width: 330px; max-width: calc(100vw - 40px); padding: 18px; background: var(--surface); border: 1px solid var(--edge); border-radius: 24px; box-shadow: var(--shadow-stage); }
.tour-top { display: flex; align-items: center; justify-content: space-between; color: var(--ink-muted); font-size: 13px; }
.tour-close { border: 0; border-radius: 50%; background: var(--surface-lavender); color: var(--ink); font-size: 24px; cursor: pointer; width: 36px; height: 36px; }
.tour-card h3 { margin: 4px 0 8px; font-size: 21px; line-height: 1.25; }
.tour-card p { margin: 0 0 14px; font-size: 15px; line-height: 1.45; color: var(--ink-muted); }
.tour-actions { display: flex; align-items: center; justify-content: flex-end; gap: 16px; }
.tour-highlight { outline: 3px solid var(--primary); outline-offset: 5px; border-radius: 24px; }
@media(max-width:720px) { .tour-card { position: relative; top: auto; margin-top: 12px; width: 100%; max-width: 100%; } .preview-guide { margin-top: 32px; } .tour-launch { font-size: 14px; } }

.facilitate-scene .stego-asks { width: fit-content; margin-bottom: 18px; }
.facilitate-scene .mini-theme { width: 100%; padding: 40px 38px 34px; }
.facilitate-scene .mini-theme h3 { font-size: 17px; }
.facilitate-scene .mini-theme .row { position: relative; margin-top: 12px; }
.facilitate-scene .mini-theme .contour { display: block; }
@media(max-width:720px) { .facilitate-scene .mini-theme { padding: 36px 28px 30px; } .facilitate-scene .stego-asks strong { font-size: 15px; } }

.tour-card.tour-plan { position: absolute; top: auto; bottom: 94px; left: 50%; transform: translateX(-50%); z-index: 50; width: 330px; max-width: calc(100% - 40px); }
.tour-card.tour-plan::after { content: ''; position: absolute; bottom: -9px; left: calc(50% - 9px); width: 16px; height: 16px; background: var(--surface); border-right: 1px solid var(--edge); border-bottom: 1px solid var(--edge); transform: rotate(45deg); }
@media(max-width:720px) { .tour-plan-active .dock { flex-wrap: wrap; gap: 6px; justify-content: center; } .tour-plan-active .dock .step:not(.on) { display: inline; } .tour-plan-active .dock .step { font-size: 11px; padding: 7px; } .tour-card.tour-plan { bottom: 126px; } }

/* A quiet thought from the original Stego mascot. */
.stego-signoff { display: flex; justify-content: center; align-items: flex-start; gap: 20px; width: fit-content; max-width: 100%; margin: 0 auto 24px; }
.final-inner .stego-signoff img.mark { width: 112px; height: auto; margin: 50px 0 0; flex: none; }
.stego-thought { position: relative; align-self: flex-start; margin: 0; padding: 16px 22px; border-radius: 999px; background: var(--surface); color: var(--ink-strong); box-shadow: var(--shadow-float); font-size: 17px; font-weight: 800; line-height: 1.3; white-space: nowrap; }
.stego-thought::before, .stego-thought::after { content: ''; position: absolute; background: var(--surface); border-radius: 50%; box-shadow: 0 3px 8px rgb(79 54 126 / 5%); }
.stego-thought::before { width: 15px; height: 15px; bottom: -12px; left: -8px; }
.stego-thought::after { width: 8px; height: 8px; bottom: -24px; left: -23px; }
@media(max-width:720px) { .stego-signoff { gap: 18px; } .final-inner .stego-signoff img.mark { width: 72px; margin-top: 44px; } .stego-thought { font-size: 14px; padding: 13px 15px; } }

.seg-interest { width: 100%; display: block; resize: vertical; min-height: 90px; margin-top: 8px; padding: 12px 14px; border: 1px solid var(--edge); border-radius: 16px; background: var(--surface); color: var(--ink); font: inherit; font-size: 15px; line-height: 1.4; }
.seg-label span { font-weight: 400; }