:root{
  --bg:#f6f9fc; --panel:#fff; --txt:#0f172a; --dim:#5b6473; --muted:#8a94a6;
  --border:#e6e9ef; --sky:#0ea5e9; --sky-dark:#0369a1; --green:#10b981; --red:#ef4444;
  /* Water & ecology accents */
  --aqua-50:#e6f9ff; --mint-50:#e9fef7; --leaf-50:#eefdf4;
}

*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--txt);font:16px/1.55 system-ui,-apple-system,"Inter",Segoe UI,Roboto,Helvetica,Arial;min-height:100vh;display:flex;flex-direction:column}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}

.container{max-width:1100px;margin:auto;padding:0 20px}

/* Layout: make content fill viewport height */
#content{flex:1 0 auto;display:flex;flex-direction:column;
  background:linear-gradient(160deg,var(--aqua-50) 0%,#f2fbff 35%,var(--mint-50) 70%,var(--leaf-50) 100%)}

/* Header & Nav */
#site-header{background:#fff;border-bottom:1px solid var(--border)}
.head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0}
.brand{display:flex;gap:12px;align-items:center}
.brand img{height:48px;width:auto;border-radius:8px}
.site-name{font-size:18px}
.tagline{display:block;color:var(--dim);font-size:12px}

.main-nav ul{display:flex;gap:10px;list-style:none;margin:0;padding:0}
.main-nav a{display:block;padding:10px 14px;border-radius:12px;color:var(--txt);font-weight:600}
.main-nav li.active a,
.main-nav a:hover{background:#eaf6ff;color:var(--sky-dark)}
.main-nav .btn{background:var(--sky);color:#fff}
.main-nav .btn:hover{background:var(--sky-dark)}

/* Hero */
.hero{background:linear-gradient(160deg,var(--aqua-50) 0%,#f2fbff 35%,var(--mint-50) 70%,var(--leaf-50) 100%);padding:56px 0;flex:1}
.hero-inner{display:grid;gap:28px;align-items:center}
@media(min-width:900px){.hero-inner{grid-template-columns:1.1fr .9fr}}
.hero-logo img{max-width:180px;margin:auto}
.hero-copy h1{font-size:34px;line-height:1.15;margin:.5rem 0;font-weight:800;letter-spacing:-.02em}
.badge{display:inline-block;background:#eaf6ff;border:1px solid #cfeaff;color:var(--sky-dark);
  padding:.35rem .6rem;border-radius:999px;font-size:.8rem;font-weight:700}
.cta-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.btn{display:inline-flex;gap:.5rem;align-items:center;padding:.7rem 1rem;border-radius:14px;font-weight:700}
.btn.primary{background:var(--sky);color:#fff;box-shadow:0 12px 28px rgba(14,165,233,.25)}
.btn.primary:hover{background:var(--sky-dark)}
.btn.ghost{background:#fff;border:1px solid var(--border)}
.btn.ghost:hover{background:#f0f6ff}

/* Sections, cards, tables */
.section{padding:60px 0}
.lead{color:var(--dim);max-width:70ch}
.cards{display:grid;gap:14px;margin-top:16px}
@media(min-width:800px){.cards{grid-template-columns:repeat(2,1fr)}}
.card{background:var(--panel);border:1px solid var(--border);border-radius:16px;padding:16px;box-shadow:0 16px 36px rgba(2,6,23,.06)}
.note{margin-top:14px;padding:12px;border-radius:12px;background:#f1f9ff;border:1px solid #d9edff}

.table{width:100%;border-collapse:separate;border-spacing:0;margin-top:16px;background:#fff;border:1px solid var(--border);border-radius:12px;overflow:hidden}
.table th,.table td{padding:10px 12px;border-bottom:1px solid var(--border);text-align:left}
.table th{background:#fbfdff;font-size:14px}
.table tr:last-child td{border-bottom:0}

/* Forms */
.form{background:#fff;border:1px solid var(--border);border-radius:16px;padding:16px;box-shadow:0 16px 36px rgba(2,6,23,.06);margin-top:12px}
.row{display:grid;gap:12px}
@media(min-width:800px){.row{grid-template-columns:1fr 1fr}}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-weight:700}
.field input,.field textarea{border:1px solid #cbd5e1;border-radius:10px;padding:.6rem .75rem;font:inherit}
.field textarea{resize:vertical;min-height:140px}
.field.hp{display:none} /* honeypot invisible */
.muted{color:var(--muted);font-size:12px}
.alert{padding:12px;border-radius:12px;margin:12px 0;font-weight:600}
.alert.success{background:#ecfdf5;border:1px solid #bbf7d0;color:#166534}
.alert.error{background:#fef2f2;border:1px solid #fecaca;color:#991b1b}
.alert-list{margin:.5rem 0 0 1rem}

/* Footer */
#site-footer{background:#0f172a;color:#cbd5e1;margin-top:20px}
.foot{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 0}
.foot small{color:#94a3b8}