:root{
  --bg:#ffffff;
  --fg:#0f172a;
  --muted:#475569;
  --border:#e5e7eb;
  --green:#1f8a3b;
  --green2:#16a34a;
  --shadow:0 10px 30px rgba(15,23,42,.08);
  --radius:18px;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }

body{
  margin:0;
  background:var(--bg);
  color:var(--fg);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  line-height:1.65;
}

a{ color:var(--green); text-decoration:none; }
a:hover{ text-decoration:underline; }

p{ margin:.75rem 0; }
h1,h2,h3{ line-height:1.2; }
h1{ font-size: clamp(2rem, 3.2vw, 3.1rem); letter-spacing:-0.02em; margin:.9rem 0 .6rem 0; }
h2{ font-size:1.35rem; margin:0 0 .6rem 0; letter-spacing:-0.01em; }
h3{ font-size:1.1rem; margin:1.2rem 0 .35rem 0; }

.container{
  width:min(1100px, calc(100% - 2.5rem));
  margin:0 auto;
}

/* Accessibility */
.skip-link{
  position:absolute; left:-999px; top:auto; width:1px; height:1px; overflow:hidden;
}
.skip-link:focus{
  left:1rem; top:1rem; width:auto; height:auto;
  padding:.6rem .9rem; background:var(--bg);
  border:1px solid var(--border); border-radius:12px;
  box-shadow:var(--shadow); z-index:9999;
}

/* Topbar */
.topbar{
  position:sticky; top:0; z-index:50;
  background:rgba(255,255,255,.86);
  backdrop-filter: blur(10px);
  border-bottom:1px solid var(--border);
}

.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  padding:.9rem 0;
}

/* Brand */
.brand{
  display:flex;
  align-items:center;
  gap:.65rem;
  color:var(--fg);
  font-weight:650;
}

.brand-badge{
  width:42px;
  height:42px;
  flex-shrink:0;
  display:grid;
  place-items:center;
  overflow:hidden;
  border-radius:10px;
}

.brand-badge img{
  width:100%;
  height:100%;
  object-fit:contain;
}

.brand-name{
  font-size:1.1rem;
  font-weight:650;
  letter-spacing:0.01em;
  color:var(--fg);
}

.brand-accent{ color:var(--green2); }

/* Nav */
.navlinks{
  display:flex;
  gap:1rem;
  flex-wrap:wrap;
  font-weight:650;
  color:var(--muted);
}

.navlinks a{
  color:var(--muted);
  padding:.35rem .55rem;
  border-radius:10px;
}

.navlinks a[aria-current="page"]{
  color:var(--green);
  background:rgba(22,163,74,.10);
  text-decoration:none;
}

/* Mobile menu */
.nav-toggle{
  display:none;
  font-size:1.25rem;
  line-height:1;
  padding:.5rem .6rem;
  border-radius:10px;
  border:1px solid var(--border);
  background:#fff;
  cursor:pointer;
}

@media (max-width: 900px){
  .nav-toggle{
    display:inline-flex;
    align-items:center;
    justify-content:center;
  }

  .nav-wrap{ position:relative; }

  .navlinks{
    display:none !important;
    position:absolute;
    right:0;
    top:100%;
    margin-top:.75rem;
    min-width:220px;
    background:#fff;
    border:1px solid var(--border);
    border-radius:14px;
    padding:.5rem;
    box-shadow:0 10px 30px rgba(0,0,0,.08);
    z-index:999;
  }

  .navlinks.open{
    display:flex !important;
    flex-direction:column;
    gap:0;
  }

  .navlinks a{
    padding:.7rem .8rem;
    border-radius:10px;
  }
}

/* Hero */
.hero{ padding:2.6rem 0 1.5rem 0; }
.lead{ color:var(--muted); font-size:1.08rem; max-width:80ch; }

.hero-intro{
  width:100%;
  padding:2rem 0;
  margin:2rem 0;
}
.hero-intro .lead{
  max-width:1100px;
  margin:0 auto;
  padding:0 1rem;
  font-size:1.2rem;
  line-height:1.75;
}

/* Home keywords */
.pills{
  display:flex;
  flex-wrap:wrap;
  gap:.5rem;
  margin:.75rem 0 0 0;
}

.pill{
  border:1px solid var(--border);
  border-radius:999px;
  padding:.25rem .6rem;
  color:var(--muted);
  font-weight:650;
  font-size:.95rem;
}

/* Layout blocks */
.grid{
  display:grid;
  grid-template-columns: 1.2fr .8fr;
  gap:1.2rem;
  align-items:start;
}
@media (max-width: 900px){
  .grid{ grid-template-columns:1fr; }
}

/* Card */
.card{
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:1.25rem;
  box-shadow:var(--shadow);
  background:#fff;
}

/* Section titles */
.section-title{
  color:var(--green);
  font-weight:850;
}
.section-title span{ color:inherit; }

/* Figure */
.figure{ margin-top:1rem; }
.figure img{
  width:100%;
  height:auto;
  border-radius:14px;
  border:1px solid var(--border);
}

/* Lists / separators */
.list{ margin:.6rem 0 0 1.1rem; }
.list li{ margin:.35rem 0; }

.hr{ border:none; border-top:1px solid var(--border); margin:1.1rem 0; }

/* Tables */
.table{
  width:100%;
  border-collapse:collapse;
  margin-top:.75rem;
  font-size:.98rem;
}
.table th, .table td{
  text-align:left;
  padding:.6rem .55rem;
  border-bottom:1px solid var(--border);
  vertical-align:top;
}
.table th{ color:var(--muted); font-weight:750; }

/* Page mini-nav */
.page-nav{ margin:.2rem 0 1rem 0; color:var(--muted); }
.page-nav a{ color:var(--green); font-weight:650; }

/* Callouts */
.notice{
  border-left:4px solid var(--green);
  padding:.8rem .9rem;
  background:rgba(22,163,74,.06);
  border-radius:12px;
  margin:.9rem 0;
  color:var(--fg);
}

/* Buttons */
.actions{
  display:flex;
  flex-wrap:wrap;
  gap:.6rem;
  margin-top:.75rem;
}

.btn{
  display:inline-block;
  padding:.55rem .85rem;
  border-radius:.6rem;
  border:1px solid rgba(0,0,0,.12);
  text-decoration:none;
  background:#fff;
}

.btn:hover{
  border-color: rgba(0,0,0,.25);
  text-decoration:none;
}

.btn-primary{
  background: rgba(22,163,74,.10);
  border-color: rgba(22,163,74,.35);
  color: var(--green);
  font-weight: 700;
}

.btn-primary:hover{
  background: rgba(22,163,74,.14);
  border-color: rgba(22,163,74,.55);
}

.btn.btn-small{
  padding:.4rem .7rem;
  border-radius:999px;
  font: inherit;
  cursor:pointer;
}

.muted{ opacity:.75; }

/* Support callout (homepage sidebar) */
.support-callout{
  margin-top:14px;
  padding:14px;
  border-radius:14px;
  border:1px solid rgba(0, 120, 60, 0.22);
  background: linear-gradient(180deg, rgba(0,120,60,0.08), rgba(0,120,60,0.03));
}
.support-actions{ margin-top:12px; }

/* Footer (UB) */
.footer-pro{
  border-top:1px solid rgba(0,0,0,.08);
  background:#f7f7f7;
  padding:44px 0 38px;
}

.footer-pro .footer-inner{
  max-width:520px;
  margin:0 auto;
  text-align:center;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:12px;
}

.footer-pro .footer-logo{
  width:220px;
  max-width:70vw;
  height:auto;
  display:block;
  margin:0 auto;
  transition: transform .15s ease, opacity .15s ease;
}

.footer-pro .footer-logo:hover{
  transform: translateY(-2px);
  opacity:.85;
}

.footer-text{ margin:0; font-size:1rem; opacity:.85; }
.footer-copy{ margin:0; font-size:.9rem; opacity:.65; }