:root{--bg:#fbfcfb;--ink:#12211d;--muted:#5f7570;--line:#e3ebe8;--accent:#0b5d4b}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Assistant","Heebo",system-ui,-apple-system,sans-serif;line-height:1.75;font-size:18px}
a{color:var(--accent)}
.top{position:sticky;top:0;background:rgba(251,252,251,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);z-index:10}
.bar{max-width:760px;margin:0 auto;padding:14px 22px;display:flex;align-items:center;gap:14px}
.bar .t{font-size:13px;color:var(--muted);white-space:nowrap}
.track{flex:1;height:4px;background:var(--line);border-radius:99px;overflow:hidden}
.fill{height:100%;background:var(--accent);border-radius:99px;transition:width .35s ease}
.step{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
main{max-width:760px;margin:0 auto;padding:56px 22px 120px;min-height:70vh}
.kicker{font-size:12.5px;letter-spacing:.12em;color:var(--accent);font-weight:700;margin-bottom:14px}
h1{font-size:clamp(28px,5vw,42px);line-height:1.15;margin:0 0 18px;letter-spacing:-.02em;font-weight:800}
.goal{font-size:18px;color:var(--muted);margin:0 0 34px;max-width:58ch}
.idea{border-right:3px solid var(--accent);padding:4px 18px 4px 0;margin:0 0 30px;font-size:21px;line-height:1.6;font-weight:600}
details{border:1px solid var(--line);border-radius:14px;padding:0 18px;margin:0 0 12px;background:#fff}
details[open]{padding-bottom:14px}
summary{cursor:pointer;padding:16px 0;font-weight:700;font-size:16px;list-style:none;display:flex;justify-content:space-between;align-items:center}
summary::-webkit-details-marker{display:none}
summary:after{content:"+";color:var(--accent);font-size:22px;font-weight:400}
details[open] summary:after{content:"−"}
details p{margin:0 0 12px;font-size:16px;color:#2c3f3a}
details ul{margin:0 0 10px;padding-right:20px;font-size:16px}
details li{margin-bottom:6px}
.cta{display:inline-block;margin-top:8px;background:var(--accent);color:#fff;text-decoration:none;padding:11px 20px;border-radius:10px;font-size:15px;font-weight:700}
.nav{position:fixed;bottom:0;left:0;right:0;background:rgba(251,252,251,.96);border-top:1px solid var(--line);backdrop-filter:blur(8px)}
.nav .in{max-width:760px;margin:0 auto;padding:12px 22px;display:flex;justify-content:space-between;align-items:center;gap:12px}
button{font:inherit;cursor:pointer;border-radius:10px;padding:11px 22px;font-weight:700;font-size:15px}
.prev{background:none;border:1px solid var(--line);color:var(--muted)}
.next{background:var(--accent);border:1px solid var(--accent);color:#fff}
button:disabled{opacity:.35;cursor:default}
.mini{font-size:12.5px;color:var(--muted)}
@media(max-width:520px){body{font-size:17px}.idea{font-size:19px}main{padding-top:36px}}

.toolbox{border:1px solid var(--line);border-radius:16px;background:#fff;padding:18px;margin:0 0 14px}
.toolbox h3{margin:0 0 12px;font-size:16px}
.toolbox label{display:block;font-size:13px;color:var(--muted);margin:10px 0 4px}
.toolbox input,.toolbox textarea,.toolbox select{width:100%;font:inherit;font-size:15px;padding:9px 12px;border:1px solid var(--line);border-radius:9px;background:#fbfdfc}
.toolbox textarea{min-height:64px;resize:vertical}
.toolbox .row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.toolbox button{background:var(--accent);color:#fff;border:0;border-radius:9px;padding:9px 16px;font-weight:700;font-size:14px;margin-top:12px}
.toolbox .out{margin-top:12px;background:#f4f9f7;border:1px solid var(--line);border-radius:10px;padding:12px;font-size:14px;white-space:pre-wrap}
.toolbox .ok{color:#0b5d4b;font-weight:700;margin-top:10px;font-size:14px}
.toolbox .err{color:#a4422f;font-weight:700;margin-top:10px;font-size:14px}
.toolbox .chip{display:inline-block;border:1px solid var(--line);border-radius:999px;padding:5px 11px;margin:4px 4px 0 0;font-size:13px;cursor:pointer;background:#fbfdfc}
.toolbox .chip.on{background:var(--accent);color:#fff;border-color:var(--accent)}
.toolbox .items{display:flex;flex-direction:column;gap:8px}
.toolbox .item{display:flex;gap:10px;align-items:flex-start;font-size:14.5px}
.toolbox .item input{width:auto;margin-top:4px}
@media(max-width:520px){.toolbox .row{grid-template-columns:1fr}}

@media print{
  .top,.nav,button,.toolbox{display:none!important}
  body{background:#fff}
  main{max-width:100%;padding:0}
  details{border:0;padding:0}
  details>summary{display:none}
  details>*{display:block!important}
  h1{font-size:22pt}
  .idea{font-size:14pt}
}
.done-btn{background:#fff;border:1px solid var(--accent);color:var(--accent);border-radius:9px;padding:9px 14px;font-weight:700;font-size:14px;cursor:pointer}
.done-btn.is-done{background:var(--accent);color:#fff}