/* Happy Steps — live demo */
.demo-hero{padding:72px 0 40px}
.howto{list-style:none;padding:0;margin:28px 0 0;display:flex;gap:12px;flex-wrap:wrap}
.howto li{display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line-2);border-radius:999px;padding:8px 18px 8px 8px;font-size:.92rem;color:var(--ink-2)}
.howto b{width:26px;height:26px;border-radius:50%;background:var(--blue);color:#fff;display:grid;place-items:center;font-size:.8rem;font-weight:500}
.demo{padding:8px 0 0}
.console{display:grid;grid-template-columns:1fr 56px 1fr;align-items:stretch}
.pane{background:#fff;border:1px solid var(--line-2);border-radius:var(--r-xl);padding:28px;box-shadow:var(--shadow-soft);min-width:0}
.pane-head h2{font-size:1.5rem;font-weight:400;margin-top:12px;letter-spacing:-.015em}
.field-label{display:flex;gap:10px;align-items:baseline;font-family:var(--font);font-size:.82rem;font-weight:500;color:var(--ink-2);margin:22px 0 10px}
.hint{font-weight:400;color:var(--muted)}
.help{font-size:.84rem;color:var(--muted);margin-top:8px}

.seg{display:inline-flex;flex-wrap:wrap;border:1px solid var(--line);border-radius:999px;overflow:hidden}
.seg button{font:500 .88rem var(--font);color:var(--ink-2);background:#fff;border:0;border-left:1px solid var(--line);padding:9px 16px;cursor:pointer}
.seg button:first-child{border-left:0}
.seg button:hover{background:var(--surface)}
.seg button[aria-pressed="true"]{background:var(--blue-50);color:var(--blue-700)}
.seg.small button{padding:7px 12px}
.liverow,.keyrow{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}
input[type=text],input[type=password],select{font:400 .92rem var(--text);color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px;min-width:0;flex:1 1 180px}
select{flex:0 1 200px}
input:focus,select:focus{outline:2px solid var(--blue);outline-offset:0;border-color:transparent}
.check{display:flex;align-items:center;gap:8px;font-size:.88rem;color:var(--ink-2);flex:1 1 180px}
.runrow{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:18px}
.clock{margin-left:auto;font-size:.85rem;color:var(--muted)}

.viz{margin-top:16px}
.viz-label{display:flex;justify-content:space-between;gap:8px;font-size:.78rem;color:var(--muted);margin-bottom:6px}
.legend{display:flex;align-items:center;gap:6px}
.dot{width:8px;height:8px;border-radius:50%;display:inline-block}
.dot.g{background:var(--green-500)} .dot.r{background:var(--red);margin-left:8px}
canvas.wave{height:150px;background:var(--surface);border-radius:16px}
.viz2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.viz2 canvas{height:130px;background:var(--surface);border-radius:16px}

.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:16px}
.kpis div{background:var(--surface);border-radius:16px;padding:12px 14px}
.kpis b{display:block;font-family:var(--font);font-size:1.5rem;font-weight:400;letter-spacing:-.02em}
.kpis span{font-size:.75rem;color:var(--muted)}
.who-res{color:var(--green)} .who-unk{color:var(--red)}

.outbox{margin-top:20px;padding-top:18px;border-top:1px solid var(--line-2)}
.outbox-head{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;align-items:baseline}
.outbox-head h3{font-size:1rem;font-weight:500}
.bytes{font-size:.8rem;color:var(--muted)} .bytes b{color:var(--ink);font-weight:500}
pre.code.mini{font-size:.74rem;padding:14px 16px;margin-top:10px;max-height:250px;border-radius:14px;white-space:pre}

.boundary{position:relative;display:flex;align-items:center;justify-content:center}
.boundary::before{content:"";position:absolute;top:24px;bottom:24px;left:50%;border-left:1.5px dashed var(--line)}
.boundary span{position:relative;writing-mode:vertical-rl;transform:rotate(180deg);background:#fff;padding:12px 4px;font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.packet{position:absolute;left:50%;top:50%;width:12px;height:12px;margin:-6px 0 0 -6px;border-radius:4px;background:var(--blue);opacity:0}
.packet.go{animation:fly 1s ease-in-out}
@keyframes fly{0%{opacity:1;transform:translateX(-28px) scale(.8)}100%{opacity:0;transform:translateX(28px)}}

.scen{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px}
.scen button{text-align:left;background:#fff;border:1px solid var(--line);border-radius:16px;padding:10px 14px;cursor:pointer;font:inherit;color:var(--ink)}
.scen button:hover{background:var(--surface)}
.scen button b{display:block;font-family:var(--font);font-weight:500;font-size:.92rem}
.scen button small{font-size:.76rem;color:var(--muted)}
.scen button[aria-pressed="true"]{background:var(--blue-50);border-color:var(--blue-100)}
.scen button[aria-pressed="true"] b{color:var(--blue-700)}

.events{max-height:240px;overflow:auto;display:grid;gap:6px;padding-right:4px}
.ev{display:grid;grid-template-columns:52px 1fr auto;gap:12px;align-items:center;border:1px solid var(--line-2);border-radius:14px;padding:8px 12px;font-size:.86rem}
.ev .t{font-family:var(--font);font-weight:500}
.ev .k{color:var(--muted);font-size:.75rem}

.keybox{margin-top:22px;background:var(--surface);border-radius:20px;padding:16px 18px}
.ask{width:100%;margin-top:18px}
.status{font-size:.88rem;margin-top:12px;min-height:1.4em;color:var(--ink-2)}
.status.err{color:var(--red)}

.result{display:none;margin-top:8px}
.result.show{display:block}
.fn{display:flex;gap:8px;align-items:center;flex-wrap:wrap;font-size:.84rem;color:var(--muted)}
.fn code{background:var(--blue-50);color:var(--blue-700);padding:3px 10px;border-radius:8px;font-weight:500;font-size:.82rem}
.letter{margin-top:12px;border-radius:24px;padding:22px 24px;background:var(--green-50)}
.letter.watch{background:var(--yellow-50)}
.letter.alert{background:var(--red-50)}
.letter .to{font-family:var(--font);font-size:.78rem;font-weight:500;color:var(--muted);letter-spacing:.04em;text-transform:uppercase}
.letter h3{font-size:1.35rem;font-weight:500;margin-top:8px;line-height:1.4}
.letter .en-h{color:var(--muted);margin-top:2px}
.letter .body-ja{margin-top:12px;font-family:var(--font);font-size:1.02rem;line-height:1.75}
.letter .body-en{margin-top:8px;font-size:.9rem;color:var(--muted)}
table.changes{width:100%;border-collapse:collapse;margin-top:14px;font-size:.86rem}
table.changes th{text-align:left;font-weight:500;font-size:.75rem;color:var(--muted);padding:6px 8px;border-bottom:1px solid rgba(0,0,0,.08)}
table.changes td{padding:8px;border-bottom:1px solid rgba(0,0,0,.06)}
.voice{margin-top:12px;display:flex;gap:14px;align-items:center;flex-wrap:wrap;border:1px solid var(--line-2);border-radius:20px;padding:14px 16px}
.voice .msg{flex:1 1 220px;font-family:var(--font);font-size:1.05rem}
.voice .msg small{display:block;font-family:var(--text);font-size:.75rem;color:var(--muted)}
details{margin-top:12px}
summary{cursor:pointer;font-family:var(--font);font-weight:500;font-size:.88rem;color:var(--blue)}

.demo-notes{margin-top:24px}
.demo-notes p{margin-top:12px;font-size:.92rem}

@media (max-width:1060px){
  .console{grid-template-columns:1fr}
  .boundary{height:64px}
  .boundary::before{top:50%;bottom:auto;left:24px;right:24px;border-left:0;border-top:1.5px dashed var(--line)}
  .boundary span{writing-mode:horizontal-tb;transform:none;padding:4px 12px}
  @keyframes fly{0%{opacity:1;transform:translateY(-22px)}100%{opacity:0;transform:translateY(22px)}}
}
@media (max-width:560px){
  .pane{padding:20px;border-radius:24px}
  .viz2{grid-template-columns:1fr}
  .kpis{grid-template-columns:1fr 1fr}
  .clock{margin-left:0}
}
@media (prefers-reduced-motion:reduce){.packet.go{animation:none}}
.pane canvas{width:100%}
.voice .msg{background:none;padding:0;margin:0;border-radius:0}