:root{
  /* Match homepage palette */
  --bg:#f6faf7;
  --panel:#ffffff;
  --panelSoft:#f1f7f2;

  --text:#0f2a1d;
  --muted:#4a6a58;
  --line: rgba(15,42,29,0.12);

  --brand:#0f6a3e;
  --brand2:#138a52;
  --accent:#c67c2f;

  --max:1180px;
  --radius:16px;
  --shadow: 0 18px 42px rgba(15,42,29,0.10);
}

*{box-sizing:border-box}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  color:var(--text);
  background: var(--bg);
  line-height:1.55;
}

a{color:inherit}
.wrap{max-width:var(--max);margin:0 auto;padding:22px 18px 70px}

/* Top header */
header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:10px 0 18px;
}
.brand{
  display:flex;
  flex-direction:column;
  gap:2px;
}
.brand strong{font-size:18px;letter-spacing:.2px;font-weight:850}
.brand span{font-size:13px;color:var(--muted)}

nav{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  align-items:center;
  justify-content:flex-end;
}
.pill{
  text-decoration:none;
  padding:9px 12px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:13px;
  color:var(--muted);
}
.pill:hover{
  color:var(--text);
  background: rgba(15,106,62,0.06);
  border-color: rgba(15,106,62,0.16);
}
.pill.cta{
  background: var(--brand);
  color:#fff;
  font-weight:850;
  border-color: rgba(15,106,62,0.24);
}
.pill.cta:hover{background: var(--brand2)}

/* Layout with sidebar */
.layout{
  display:grid;
  grid-template-columns: 300px 1fr;
  gap:14px;
  align-items:start;
}
@media (max-width: 980px){
  .layout{grid-template-columns: 1fr;}
}

/* Sidebar */
.sidebar{
  position:sticky;
  top:14px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
  padding:14px 14px;
}
.sidebar h3{
  margin:4px 0 10px;
  font-size:12px;
  color:var(--muted);
  letter-spacing:.28px;
  text-transform:uppercase;
  font-weight:900;
}
.sidebar .group{margin:10px 0 12px}
.sidebar .small{
  font-size:12px;
  color:var(--muted);
  margin:6px 0 0;
}
.sidebar a{
  display:block;
  padding:9px 10px;
  border-radius:12px;
  text-decoration:none;
  color: var(--text);
  border: 1px solid transparent;
  background: rgba(15,106,62,0.04);
}
.sidebar a:hover{
  background: rgba(15,106,62,0.08);
  border-color: rgba(15,106,62,0.18);
}

/* Hero / page intro (academy index) */
.hero{
  border:1px solid var(--line);
  border-radius:calc(var(--radius) + 4px);
  background: var(--panel);
  box-shadow: var(--shadow);
  padding:26px 22px;
}
.hero h1{margin:0 0 8px;font-size:clamp(24px,3.2vw,36px);letter-spacing:-.45px}
.hero p{margin:0;color:var(--muted);max-width:85ch}

/* Section title */
.section-title{
  margin:18px 0 10px;
  font-size:12px;
  color:var(--muted);
  letter-spacing:.28px;
  text-transform:uppercase;
  font-weight:900;
}

/* Cards */
.card{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background: var(--panel);
  box-shadow: 0 12px 28px rgba(15,42,29,0.08);
  padding:16px 16px;
}
.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:14px;margin-top:14px}
.grid .card{grid-column:span 12}
@media (min-width:980px){
  .third{grid-column:span 4}
  .half{grid-column:span 6}
}

/* Lists of lessons */
.list{margin:10px 0 0;padding:0;list-style:none}
.list li{
  display:flex;
  justify-content:space-between;
  gap:12px;
  padding:10px 10px;
  border:1px solid var(--line);
  border-radius:12px;
  margin-bottom:10px;
  background: var(--panelSoft);
}
.list a{
  text-decoration:none;
  font-weight:900;
  color: var(--brand);
}
.list a:hover{color: var(--brand2)}
.meta{
  color:var(--muted);
  font-size:12px;
  white-space:nowrap;
}

/* Main content page */
.content{
  border:1px solid var(--line);
  border-radius:calc(var(--radius) + 2px);
  background: var(--panel);
  box-shadow: var(--shadow);
  padding:18px 18px;
}
.content h1{margin:0 0 10px;font-size:clamp(22px,3vw,34px);letter-spacing:-.35px}
.content h2{margin:18px 0 8px}
.content h3{margin:14px 0 8px}
.content p{margin:10px 0;color:var(--text)}
.content ul,.content ol{margin:10px 0 10px 22px}
.content li{margin:6px 0}
.content code{
  background: rgba(15,106,62,0.08);
  border: 1px solid rgba(15,106,62,0.16);
  padding:2px 6px;
  border-radius:8px;
}

/* Callouts */
.callout{
  border:1px solid rgba(198,124,47,0.22);
  background: rgba(198,124,47,0.10);
  border-radius: 14px;
  padding: 12px 12px;
  color: #3e2410;
  margin: 12px 0;
}
.callout strong{color:#3e2410}

/* Footer */
footer{
  margin-top:30px;
  padding-top:18px;
  border-top:1px solid var(--line);
  color:var(--muted);
  font-size:13px;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:space-between;
  align-items:center;
}