:root{
  --bg: #0b1721;
  --bg-alt:#0f2430;
  --fg: #e9f2ef;
  --muted:#b8d0c7;
  --accent:#5be0b3;
  --accent-2:#8fd6ff;
  --card:#112a35;
  --border:#1e3a47;
  --shadow: 0 10px 30px rgba(0,0,0,.25);
  --radius: 20px;
}

* { box-sizing: border-box; }
html,body{ margin:0; padding:0; font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; color:var(--fg); background:linear-gradient(180deg, var(--bg) 0%, #0a1a22 100%); }
img{ max-width:100%; height:auto; display:block; }
a{ color: var(--accent); text-decoration: none; }
a:hover{ text-decoration: underline; }

.container{ width:min(1200px, 92%); margin-inline:auto; }
.flex{ display:flex; gap:1rem; }
.between{ justify-content: space-between; }
.center{ align-items: center; }
.start{ align-items: flex-start; }

.site-header{
  position: sticky; top:0; z-index: 50;
  background: rgba(11,23,33,.7); backdrop-filter: blur(10px); border-bottom:1px solid var(--border);
}
.brand{ display:flex; align-items:center; gap:.6rem; font-weight:800; letter-spacing:.5px; color:#fff; }
.brand .logo{ filter: drop-shadow(0 5px 12px rgba(0,0,0,.3)); }
.brand span{ font-size:1.05rem; }
.brand.invert span{ color:#cfe9df; }

.main-nav ul{ display:flex; gap:1.2rem; list-style:none; margin:0; padding:1rem 0; }
.main-nav a{ color:#eaf7f2; font-weight:500; }
.main-nav .btn.small{ padding:.4rem .8rem; }
.nav-toggle{ display:none; background:transparent; border:1px solid var(--border); color:#cfe9df; padding:.35rem .6rem; border-radius:8px; }

@media (max-width:880px){
  .nav-toggle{ display:block; }
  .main-nav ul{ display:none; position:absolute; right:1rem; top:60px; background:#0e202a; border:1px solid var(--border); padding:1rem; border-radius:12px; flex-direction:column; width: 240px; box-shadow: var(--shadow); }
  .main-nav ul.open{ display:flex; }
}

.hero{
  padding: clamp(3rem, 10vw, 6.5rem) 0 4rem;
  background:
    radial-gradient(1200px 400px at 10% -10%, rgba(91,224,179,.2), transparent 60%),
    radial-gradient(900px 320px at 90% 10%, rgba(143,214,255,.18), transparent 60%);
}
.hero h1{ font-size: clamp(2rem, 5.5vw, 3.5rem); line-height:1.1; margin:0 0 1rem; }
.accent{ background: linear-gradient(45deg, var(--accent), var(--accent-2)); -webkit-background-clip:text; background-clip:text; color: transparent; }
.lead{ color:var(--muted); font-size: clamp(1rem, 2.2vw, 1.15rem); }
.cta{ display:flex; gap:.8rem; margin:1rem 0 1rem; flex-wrap:wrap; }
.btn{
  background: linear-gradient(45deg, #23a87c, #46e0b3);
  color:#06271f; font-weight:700; border:none; border-radius: 14px; padding:.9rem 1.1rem; display:inline-block;
  box-shadow: 0 10px 20px rgba(35,168,124,.35);
}
.btn:hover{ transform: translateY(-1px); box-shadow: 0 14px 25px rgba(35,168,124,.45); text-decoration:none; }
.btn.ghost{ background: transparent; border:1px solid #2b8a6b; color:#ccefe5; }
.btn.small{ padding:.55rem .9rem; font-size:.95rem; }

.highlights{ list-style: none; margin: .5rem 0 0; padding:0; display:flex; gap:1rem; flex-wrap:wrap; color:#a9cfc3; }
.highlights li::before{ content:"✓"; margin-right:.4rem; color: var(--accent); }

.grid-2{ display:grid; grid-template-columns: 1.1fr .9fr; gap:2rem; align-items:center; }
.grid-3{ display:grid; grid-template-columns: repeat(3,1fr); gap:1.2rem; }
@media (max-width:980px){
  .grid-2{ grid-template-columns: 1fr; }
  .grid-3{ grid-template-columns: 1fr; }
}

.section{ padding: clamp(2.5rem, 6vw, 4.5rem) 0; }
.section.alt{ background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.00)); border-top:1px solid var(--border); border-bottom:1px solid var(--border); }
.section h2{ font-size: clamp(1.6rem, 4.2vw, 2.2rem); margin:0 0 1rem; }

.card{ background: var(--card); border:1px solid var(--border); border-radius: var(--radius); padding:1.1rem 1.2rem; box-shadow: var(--shadow); }
.card.mini{ text-align:center; }
.card.project .card-media{ border-radius: 16px; overflow:hidden; border:1px solid var(--border); margin-bottom:.9rem; }
.card.story{ min-height: 170px; }

.grid-2 aside.card h3,
.cards .card h3{ margin-top:.2rem; }

.cards{ display:grid; grid-template-columns: repeat(2,1fr); gap:1.2rem; }
@media (max-width:880px){ .cards{ grid-template-columns: 1fr; } }

.checklist{ list-style:none; padding:0; margin:.8rem 0 0; color:#c8ddd5; }
.checklist li{ margin:.35rem 0; }
.checklist li::marker{ content:""; }
.pill{ background: var(--card); padding:1rem; border:1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }

.impact-grid{ display:grid; grid-template-columns: repeat(5,1fr); gap:1rem; }
@media (max-width:980px){ .impact-grid{ grid-template-columns: repeat(2,1fr); } }
@media (max-width:520px){ .impact-grid{ grid-template-columns: 1fr; } }
.impact-item{ background: var(--card); border:1px solid var(--border); border-radius: 18px; padding:1.1rem; text-align:center; box-shadow: var(--shadow); }
.impact-number{ font-weight:800; font-size: clamp(1.8rem, 4.5vw, 2.4rem); line-height:1; }
.impact-label{ color:#b7d5cc; margin-top:.35rem; font-size:.98rem; }
.note{ color:#9fbdb4; margin-top:1rem; }

.steps{ padding-left:1.1rem; }
.steps li{ margin:.35rem 0; }

.contact-form .field{ margin:.7rem 0; }
.contact-form label{ display:block; margin-bottom:.35rem; color:#cde6df; }
.contact-form input, .contact-form textarea, .newsletter input{
  width:100%; background:#0b1f27; border:1px solid var(--border); border-radius: 12px; color:#e5f3ee; padding:.8rem;
}
.newsletter{ display:flex; gap:.5rem; margin-top:.7rem; }
.newsletter .btn.small{ flex:0 0 auto; }
.social{ display:flex; gap:1rem; margin-top:.7rem; padding:0; list-style:none; }
.sr-only{ position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0; }

.site-footer{
  margin-top:2rem; padding:2rem 0; border-top:1px solid var(--border);
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0));
}
.footer-nav{ display:flex; list-style:none; gap:1rem; margin:0; padding:0; }
.tiny{ font-size:.9rem; color:#a9cfc3; }