:root{--bg:#fbf6ee;--card:#fff;--ink:#3d405b;--muted:#8a8577;--line:#eadfce;--accent:#e07a5f;--accent-deep:#c65a3f;--sage:#81b29a;--radius:16px}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}
a{color:var(--accent-deep)}
header.site,footer.site{display:flex;justify-content:space-between;align-items:center;gap:1rem;padding:1rem 1.5rem;flex-wrap:wrap}
header.site{border-bottom:1px solid var(--line);background:#fff}
.brand{font-weight:800;text-decoration:none;color:var(--ink)}
.cta{background:var(--accent);color:#fff;padding:.5rem .9rem;border-radius:10px;text-decoration:none;font-weight:600}
.cta:hover{background:var(--accent-deep)}
.cta.big{display:inline-block;margin-top:.6rem;padding:.7rem 1.2rem}
main{max-width:860px;margin:0 auto;padding:1.5rem}
.hero h1{font-size:2rem;margin:.4rem 0}
.hero p{color:var(--muted);font-size:1.05rem}
.filters{display:flex;gap:.5rem;flex-wrap:wrap;margin:1.4rem 0}
.filters input{flex:1;min-width:200px}
input,select{padding:.55rem .7rem;border:1px solid var(--line);border-radius:10px;font-size:.95rem;background:#fff;color:var(--ink)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:.8rem}
.card{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1rem 1.1rem;text-decoration:none;color:inherit;transition:transform .1s,box-shadow .1s}
.card:hover{transform:translateY(-2px);box-shadow:0 6px 18px rgba(61,64,91,.08)}
.card-top{display:flex;justify-content:space-between;gap:.6rem;align-items:baseline}
.card-title{font-weight:700}
.card-badge{color:var(--accent-deep);font-weight:600;font-size:.78rem;white-space:nowrap}
.card-sub{color:var(--muted);font-size:.85rem;margin-top:.3rem}
.badge{display:inline-block;background:var(--sage);color:#fff;font-size:.78rem;font-weight:700;padding:.2rem .6rem;border-radius:999px}
.crumb{color:var(--muted);font-size:.85rem;margin-bottom:.6rem}
.lesson h1{font-size:1.7rem;margin:.5rem 0}
.meta{display:flex;flex-wrap:wrap;gap:.4rem 1.1rem;color:var(--muted);font-size:.88rem;margin:.4rem 0 1.2rem;padding-bottom:1rem;border-bottom:1px solid var(--line)}
.meta b{color:var(--ink)}
.content h2{font-size:1.3rem;margin:1.4rem 0 .4rem}
.content h3{font-size:1.1rem;margin:1.1rem 0 .3rem}
.content blockquote{margin:.6rem 0;padding:.4rem 1rem;border-left:3px solid var(--sage);background:#fff;border-radius:0 8px 8px 0;color:#555}
.content code{background:#f2ece0;padding:.1rem .35rem;border-radius:4px;font-size:.9em}
.content ul,.content ol{padding-left:1.3rem}
.addbox{margin-top:2rem;padding:1.2rem 1.3rem;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
.addbox p{margin:0;color:var(--muted)}
.empty{color:var(--muted);text-align:center;padding:2rem}
footer.site{border-top:1px solid var(--line);color:var(--muted);font-size:.85rem;margin-top:2rem}
footer.site p{margin:0}