.hero-note,.axis{margin:12px 0 0;max-width:36rem;color:var(--mut);font-size:.95rem;line-height:1.45}
.axis{margin-top:16px;font-size:1.05rem;color:var(--text);font-weight:500}
.hero-copy .hero-note,.hero-copy .axis{margin-left:auto;margin-right:auto}

.demo-tabs{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin:0 auto 28px;max-width:720px}
.demo-tab{appearance:none;border:1px solid var(--line);background:rgba(0,0,0,.35);color:var(--mut);font:inherit;font-weight:600;font-size:.9rem;padding:10px 18px;border-radius:999px;cursor:pointer;min-height:44px;transition:border-color .2s,color .2s,background .2s}
.demo-tab:hover{color:#fff;border-color:color-mix(in srgb,var(--acc) 45%,transparent)}
.demo-tab.on{color:#fff;border-color:color-mix(in srgb,var(--acc) 65%,transparent);background:color-mix(in srgb,var(--acc2) 28%,transparent);box-shadow:0 0 0 1px color-mix(in srgb,var(--acc2) 35%,transparent)}
.demo-tab:focus-visible{outline:2px solid var(--acc);outline-offset:3px}

.demo-panel[hidden]{display:none}
.demo-panel.on{display:block}

.demo-grid{display:grid;gap:24px;grid-template-columns:1fr 1fr;align-items:stretch}
@media (max-width:900px){.demo-grid{grid-template-columns:1fr}}
.demo-chat{display:flex;flex-direction:column;gap:14px;padding:24px}
.demo-card-title{margin:0 0 4px;font-size:1.15rem}
.demo-msg{border-radius:16px;padding:14px 16px;background:rgba(255,255,255,.06);border:1px solid var(--line)}
.demo-msg.you{align-self:flex-end;max-width:92%;background:color-mix(in srgb,var(--acc2) 28%,transparent)}
.demo-msg.kaipi{align-self:flex-start;max-width:92%}
.demo-msg .who{display:block;font-size:.75rem;color:var(--mut);margin-bottom:6px;font-weight:600}
.demo-msg p{margin:0}
.demo-tree{padding:24px}
.demo-tree h3{margin:0 0 16px}
.tree{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.tree li{display:flex;gap:14px;align-items:flex-start;padding:12px 14px;border-radius:14px;border:1px solid var(--line);background:rgba(0,0,0,.25)}
.tree li.on{border-color:color-mix(in srgb,var(--acc) 55%,transparent);box-shadow:0 0 0 1px color-mix(in srgb,var(--acc2) 35%,transparent)}
.t-step{flex:none;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-weight:700;font-size:.85rem;background:linear-gradient(135deg,var(--acc),var(--acc2))}
.tree small{display:block;color:var(--mut);margin-top:2px}

.demo-outcome{margin:20px auto 0;max-width:720px;color:var(--mut);font-size:.95rem;line-height:1.5;text-align:center}

.beats .feat h3{margin-top:0}

/* Hero phone: single Kaipi thread + spawn pills */
.phone .thread{flex:1;overflow:auto;padding:10px 12px 8px;display:flex;flex-direction:column;gap:8px;min-height:0}
.phone .bubble{max-width:92%;padding:8px 10px;border-radius:14px;font-size:.72rem;line-height:1.35;border:1px solid var(--line)}
.phone .bubble.you{align-self:flex-end;background:color-mix(in srgb,var(--acc2) 32%,transparent)}
.phone .bubble.kaipi{align-self:flex-start;background:rgba(255,255,255,.07)}
.phone .bubble.mute{opacity:.75;font-size:.68rem}
.phone .spawn{display:flex;flex-wrap:wrap;gap:6px;padding:2px 0 4px}
.phone .spawn-pill{font-size:.62rem;padding:4px 8px;border-radius:999px;border:1px solid color-mix(in srgb,var(--acc) 45%,transparent);background:rgba(0,0,0,.35);color:var(--text)}
.phone .spawn-pill.on{border-color:var(--acc);box-shadow:0 0 12px color-mix(in srgb,var(--acc2) 40%,transparent);animation:spawn-pulse 1.6s ease-in-out infinite}
@keyframes spawn-pulse{0%,100%{opacity:1}50%{opacity:.65}}
.phone .screen{display:flex;flex-direction:column}
.phone .chat-head,.phone .status,.phone .tabbar{flex:none}
.phone .tabbar{margin-top:auto}