:root{
  --brand:#2f5d3a;--brand-dark:#224a2b;--accent:#c8902a;--ink:#22252a;--muted:#6b7280;
  --bg:#ffffff;--bg-soft:#f4f6f4;--line:#e4e7e4;--radius:10px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif;color:var(--ink);line-height:1.6;background:var(--bg)}
img{max-width:100%;height:auto}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1120px;margin:0 auto;padding:0 18px}

/* Header */
.site-header{background:var(--brand);color:#fff;position:sticky;top:0;z-index:50;box-shadow:0 2px 8px rgba(0,0,0,.15)}
.header-inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;padding:14px 18px}
.brand{display:flex;flex-direction:column;line-height:1.1;color:#fff}
.brand-name{font-size:1.35rem;font-weight:800;letter-spacing:.5px}
.brand-sub{font-size:.78rem;color:#d7e3d8;text-transform:uppercase;letter-spacing:1.5px}
.main-nav{display:flex;gap:18px;flex-wrap:wrap}
.main-nav a{color:#fff;font-weight:600;font-size:.95rem;padding:4px 2px;border-bottom:2px solid transparent}
.main-nav a:hover{text-decoration:none;border-bottom-color:var(--accent)}

/* Main */
.site-main{min-height:60vh;padding:34px 0 54px}
.site-footer{background:var(--brand-dark);color:#d7e3d8;margin-top:30px;padding:34px 0 20px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr;gap:30px}
.footer-grid a{display:block;color:#cfe0d0;margin-bottom:6px}
.footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;margin-top:24px;padding-top:16px;border-top:1px solid rgba(255,255,255,.15);font-size:.85rem;color:#a9c2ab}

/* Hero */
.hero{background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);color:#fff;padding:56px 0;border-radius:0 0 18px 18px}
.hero h1{font-size:2.3rem;margin:0 0 14px;line-height:1.2}
.hero p{font-size:1.12rem;max-width:640px;color:#e2ece3}
.hero .btn{margin-top:10px}

.btn{display:inline-block;background:var(--accent);color:#fff;padding:12px 22px;border-radius:8px;font-weight:700;border:none;cursor:pointer}
.btn:hover{background:#b57d1f;text-decoration:none}
.btn.secondary{background:transparent;border:2px solid #fff}
.btn.secondary:hover{background:rgba(255,255,255,.15)}

h1,h2,h3{line-height:1.25;color:#1c1f24}
h2{font-size:1.5rem;margin-top:34px}
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.card{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);padding:20px;transition:.15s}
.card:hover{box-shadow:0 6px 18px rgba(0,0,0,.07)}
.card h3{margin-top:0}
.card .price{color:var(--brand);font-weight:700}

.muted{color:var(--muted)}
.tag{display:inline-block;background:#e8efe8;color:var(--brand);font-size:.78rem;font-weight:700;padding:3px 10px;border-radius:20px;margin:0 6px 6px 0}
.breadcrumb{font-size:.88rem;color:var(--muted);margin-bottom:18px}
.breadcrumb a{color:var(--muted)}

/* Forms */
label{display:block;font-weight:600;margin:14px 0 6px}
input,select,textarea{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:8px;font:inherit;background:#fff}
input:focus,select:focus,textarea:focus{outline:2px solid var(--brand);border-color:var(--brand)}
.form-box{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);padding:24px;max-width:640px}
.alert{background:#eaf4ea;border:1px solid #bfdfc0;color:#25632c;padding:14px 16px;border-radius:8px;margin:16px 0}
.alert.error{background:#fdecec;border-color:#f0c4c4;color:#9b2c2c}

/* Calculator */
.calc-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
@media(max-width:760px){.calc-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}}
.result-box{background:var(--brand);color:#fff;border-radius:var(--radius);padding:22px;font-size:1.5rem;font-weight:800;text-align:center}
.result-box small{display:block;font-size:.85rem;font-weight:400;color:#d7e3d8;margin-top:4px}
.range-val{color:var(--accent);font-weight:700}
.hint{font-size:.85rem;color:var(--muted)}