:root{--bg:#f3f6f5;--fg:#10201f;--ink:#0e5a5a;--ok:#0b6b3a;--muted:#42534f;--card:#fff;--line:#cfdcd8}
*{box-sizing:border-box}
body{margin:0;font:17px/1.55 Georgia,"Times New Roman",serif;color:var(--fg);background:var(--bg)}
h1,h2,.btn,header,.tag,label,button,.lbl{font-family:system-ui,-apple-system,"Segoe UI",sans-serif}
header,main,footer{max-width:68rem;margin:0 auto;padding:1rem}
header{display:flex;justify-content:space-between;align-items:center}
.brand{display:flex;align-items:center;gap:.5rem;font:700 1.3rem system-ui,sans-serif;color:var(--ink);text-decoration:none}
.btn{display:inline-block;min-height:44px;padding:.7rem 1.3rem;background:var(--ink);color:#fff;border-radius:8px;text-decoration:none;border:0;font-size:1rem;font-weight:600;cursor:pointer}
.btn:hover{background:#0a4343}
.tag{display:inline-block;font-size:.8rem;color:var(--muted);border:1px solid var(--line);border-radius:99px;padding:.15rem .7rem;margin-left:.6rem}
h1{font-size:clamp(2rem,5vw,3.2rem);line-height:1.1;margin:1.5rem 0 .6rem;color:var(--ink)}
.lead{font-size:1.2rem;color:var(--muted);margin:0 0 1.2rem}
.hero{display:grid;grid-template-columns:1fr;gap:1rem}
.demo{display:flex;align-items:center;justify-content:center;gap:1rem;flex-wrap:wrap;margin:1.5rem 0;padding:1.5rem 1rem;background:var(--card);border:1px solid var(--line);border-radius:14px}
.demo figure{margin:0;text-align:center}
.demo svg{width:min(240px,38vw);height:auto}
.demo figcaption{font:600 .95rem system-ui,sans-serif;margin-top:.4rem}
.arrow{font-size:2.4rem;color:var(--ink)}
.trail{display:flex;justify-content:center;gap:.9rem;font:.85rem system-ui,sans-serif;color:var(--ok);margin-top:.5rem}
.trail span::before{content:"";display:inline-block;width:.6rem;height:.6rem;border-radius:50%;background:var(--ok);margin-right:.3rem}
.cp{font:.8rem system-ui,sans-serif;color:var(--muted);text-align:center;width:100%;margin:0}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(14rem,1fr));gap:1rem;padding:0;list-style:none}
.facts li{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:1rem}
.facts b{display:block;font-family:system-ui,sans-serif;color:var(--ink)}
h2{font-size:1.6rem;color:var(--ink);margin-top:2.2rem}
details{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:.8rem 1rem;margin:.6rem 0}
summary{cursor:pointer;font:600 1rem system-ui,sans-serif}
form{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:1.2rem;max-width:34rem}
label{display:block;font-size:.95rem;font-weight:600}
input,textarea{width:100%;font:inherit;padding:.6rem;border:1px solid #8aa09a;border-radius:6px;margin-top:.2rem}
input[type=checkbox]{width:auto}
.hp{position:absolute;left:-9999px}
a{color:var(--ink)}
footer{color:var(--muted);font-size:.9rem}
:focus-visible{outline:3px solid #f5a623;outline-offset:2px}
header{flex-wrap:wrap;gap:.6rem}header .btn{padding:.6rem 1rem}@media(max-width:600px){header .tag{display:none}.demo svg{width:min(200px,60vw)}.arrow{transform:rotate(90deg)}}

.msgs{list-style:none;margin:0;padding:0;text-align:left;font:.85rem system-ui,sans-serif;width:min(300px,70vw)}.msgs li{display:flex;gap:.4rem;align-items:center;padding:.4rem .5rem;border:1px solid var(--line);border-radius:6px;margin:.3rem 0;background:#fff}.msgs .t{background:#d8f0e3;color:var(--ok);font-weight:700;border-radius:4px;padding:0 .3rem;font-size:.75rem}.msgs .lk{color:var(--muted)}.msgs .dim{background:#e9eeed;color:#42534f}