:root{--bg-canvas:#fff;--bg-surface:#fff;--bg-surface-hover:#f8fafc;--band:#f1f5f9;--text-primary:#1e293b;--text-muted:#475569;--accent-primary:#c2410c;--accent-secondary:#9a3412;--border-subtle:#cbd5e1;--ease-kinetic:cubic-bezier(0.16,1,0.3,1);--shadow-elevation:none;--glow-accent:none;--glass-backdrop:none;--dots:radial-gradient(rgba(30,41,59,.04) 1.5px,transparent 1.6px)}
*,*::before,*::after{box-sizing:border-box}
body{margin:0;background:var(--bg-canvas);color:var(--text-primary);font:1rem/1.7 system-ui,"Segoe UI",Roboto,sans-serif;overflow-wrap:anywhere;hyphens:auto}
h1,h2,h3,h4{font-family:system-ui,"Segoe UI",Roboto,sans-serif;font-weight:800;letter-spacing:-.02em;line-height:1.15;overflow-wrap:anywhere;hyphens:auto;margin:0 0 .6em}
h1{font-size:clamp(2.4rem,7vw,5rem)}h2{font-size:clamp(1.5rem,3.4vw,2.2rem)}h3{font-size:1.2rem}
a{color:var(--accent-primary);text-underline-offset:3px}a:hover{color:var(--accent-secondary)}
img{max-width:100%;height:auto;display:block}
:focus-visible{outline:3px solid var(--accent-primary);outline-offset:3px}
.wrap{max-width:1200px;margin:0 auto;padding:0 1.25rem}
.prose{max-width:70ch;margin:0 auto}
.muted{color:var(--text-muted)}
.site-header{position:relative;background:#fff;border-bottom:1px solid var(--border-subtle)}
.hbar{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.25rem;max-width:1200px;margin:0 auto}
.brand{display:flex;align-items:center;gap:.6rem;font-weight:800;letter-spacing:-.02em;color:var(--text-primary);text-decoration:none;font-size:1.15rem;margin-right:auto}
.brand-mark{width:34px;height:34px;border-radius:50%;background:var(--accent-primary);color:#fff;display:grid;place-items:center;font-size:.9rem}
.menu-btn{display:none;background:none;border:1px solid var(--border-subtle);width:42px;height:42px;font-size:1.5rem;line-height:1;cursor:pointer;color:var(--text-primary);border-radius:50%}
.nav ul{list-style:none;margin:0;padding:.4rem 1.25rem .9rem;display:flex;justify-content:center;flex-wrap:wrap;gap:.3rem 1.4rem}
.nav a{text-decoration:none;color:var(--text-primary);font-weight:600;font-size:.95rem;padding:.2rem 0;border-bottom:2px solid transparent;transition:border-color .3s var(--ease-kinetic)}
.nav a:hover,.nav a[aria-current="page"]{border-color:var(--accent-primary);color:var(--accent-primary)}
.hero{background-color:var(--band);background-image:var(--dots);background-size:18px 18px;padding:clamp(3.5rem,10vw,7rem) 0}
.hero p{font-size:1.2rem;max-width:60ch;color:var(--text-muted)}
.btn{display:inline-block;background:var(--accent-primary);color:#fff;border:0;border-radius:999px;padding:.85rem 1.7rem;font-weight:700;text-decoration:none;cursor:pointer;font-size:1rem;transition:background .3s var(--ease-kinetic),transform .3s var(--ease-kinetic)}
.btn:hover{background:var(--accent-secondary);color:#fff;transform:translateY(-2px)}
.btn.ghost{background:var(--text-primary)}.btn.ghost:hover{background:#0f172a}
.flow{position:relative;padding:3rem 0 3rem 0;margin-left:1.25rem}
.flow::before{content:"";position:absolute;left:21px;top:0;bottom:0;width:2px;background:var(--accent-primary)}
.step{position:relative;padding:0 0 3.5rem 4.5rem}
.step::before{content:attr(data-n);position:absolute;left:0;top:0;width:44px;height:44px;border-radius:50%;background:var(--accent-primary);color:#fff;font-weight:800;display:grid;place-items:center;z-index:1;border:4px solid #fff}
.step.band{background:var(--band);padding-top:2rem;padding-bottom:2rem;padding-right:1.5rem;margin-bottom:3rem}
.step.band::before{top:2rem}
.step.dotted{background-color:var(--band);background-image:var(--dots);background-size:18px 18px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.25rem}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:1.25rem}
.card{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:0;padding:1.25rem;text-decoration:none;color:var(--text-primary);display:block;transition:border-color .3s var(--ease-kinetic),transform .4s var(--ease-kinetic)}
.card:hover{border-color:var(--accent-primary);transform:translateY(-4px);color:var(--text-primary)}
.card img,.sq{aspect-ratio:1/1;object-fit:cover;width:100%;background:var(--band)}
.card h3{margin:1rem 0 .4rem}
.card .more{color:var(--accent-primary);font-weight:700}
.entities{counter-reset:e;list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:.75rem}
.entities li{counter-increment:e;border:1px solid var(--border-subtle);padding:.8rem 1rem .8rem 3.2rem;position:relative;background:#fff}
.entities li::before{content:counter(e);position:absolute;left:.8rem;top:.8rem;width:28px;height:28px;border-radius:50%;border:2px solid var(--accent-primary);color:var(--accent-primary);font-weight:800;font-size:.8rem;display:grid;place-items:center}
details{border:1px solid var(--border-subtle);background:#fff;margin-bottom:.6rem;border-radius:0}
summary{cursor:pointer;padding:1rem 1.2rem;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:1rem}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--accent-primary);font-weight:800;font-size:1.3rem;line-height:1}
details[open] summary::after{content:"–"}
details[open]{border-color:var(--accent-primary)}
details p{margin:0;padding:0 1.2rem 1.1rem}
.lesson-head{display:grid;grid-template-columns:1.4fr 1fr;gap:2rem;align-items:center}
.lesson-head img{aspect-ratio:1/1;object-fit:cover;border:1px solid var(--border-subtle)}
.lesson-head h1{font-size:clamp(2rem,5vw,3.4rem)}
.tip{border-left:4px solid var(--accent-primary);background:var(--band);padding:1rem 1.2rem;margin:1.2rem 0}
.form-step{border:1px solid var(--border-subtle);padding:1.2rem;margin-bottom:1rem;position:relative;padding-left:4rem}
.form-step .num{position:absolute;left:1rem;top:1.1rem;width:32px;height:32px;border-radius:50%;background:var(--accent-primary);color:#fff;font-weight:800;display:grid;place-items:center;font-size:.9rem}
label{display:block;font-weight:700;margin-bottom:.4rem}
input,select,textarea{width:100%;font:inherit;padding:.7rem .8rem;border:1px solid var(--border-subtle);border-radius:0;background:#fff;color:var(--text-primary)}
input:focus,select:focus,textarea:focus{border-color:var(--accent-primary);outline:2px solid var(--accent-primary)}
.actions{display:flex;flex-wrap:wrap;gap:.7rem;margin-top:1rem}
#tool-status{min-height:1.5em;font-weight:600;color:var(--accent-secondary)}
pre.preview{white-space:pre-wrap;border:1px solid var(--border-subtle);background:var(--band);padding:1rem;font-size:.9rem}
.site-footer{border-top:1px solid var(--border-subtle);background:var(--band);padding:2.5rem 0 1.5rem;margin-top:3rem;font-size:.95rem}
.fgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.5rem}
.site-footer ul{list-style:none;padding:0;margin:0}.site-footer li{margin:.25rem 0}
.site-footer h2{font-size:1rem}
.copy{margin-top:1.5rem;color:var(--text-muted);font-size:.85rem}
.reveal{opacity:0;transform:translateY(24px);transition:all .7s var(--ease-kinetic)}
.reveal.reveal-visible{opacity:1;transform:translateY(0)}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}
@media (min-width:1025px){.wrap{padding:0 2rem}}
@media (max-width:1024px){.lesson-head{gap:1.5rem}}
@media (max-width:768px){
.menu-btn{display:block}
.nav{display:none;border-top:1px solid var(--border-subtle);background:#fff}
.nav.open{display:block;animation:slide .35s var(--ease-kinetic)}
.nav ul{flex-direction:column;padding:1rem 1.25rem;gap:0}
.nav li{border-bottom:1px solid var(--border-subtle)}
.nav a{display:block;padding:.75rem 0;border:0}
.grid-2,.lesson-head{grid-template-columns:1fr}
.step{padding-left:3.6rem}
}
@media (max-width:480px){.flow{margin-left:.25rem}.step{padding-left:3.3rem}.step.band{padding-right:1rem}.hero p{font-size:1.05rem}}
@keyframes slide{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:none}}