:root{--bg:#ffffff;--ink:#0e2d25;--muted:#6a8780;--brand:#0a5a43;--accent:#19a57a;--card:#f4fbf8;--shadow:0 4px 20px rgba(10,90,67,.08);--radius:16px}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Helvetica,Arial}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}
.container{max-width:1140px;margin:auto;padding:0 16px}
.flex{display:flex;gap:16px}.center{align-items:center}.between{justify-content:space-between}
.grid{display:grid;gap:20px}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:980px){.grid-4,.grid-3{grid-template-columns:repeat(2,1fr)}}@media(max-width:640px){.grid-4,.grid-3,.grid-2{grid-template-columns:1fr}}
.site-header{position:sticky;top:0;background:#fff;border-bottom:1px solid #e6efe9;z-index:20}
.logo{display:flex;align-items:center;font-weight:800;color:var(--ink);letter-spacing:.3px}.logo .logo-mark{font-size:22px;margin-right:8px}
.site-nav{display:flex;gap:16px}.nav-toggle{display:none;border:0;background:transparent;font-size:22px}
@media(max-width:900px){.site-nav{display:none;position:absolute;top:56px;right:16px;background:#fff;border:1px solid #e7efe9;box-shadow:var(--shadow);flex-direction:column;padding:12px;border-radius:12px}.nav-toggle{display:block}}
.hero{background:linear-gradient(135deg,var(--card),#fff);padding:56px 0;border-bottom:1px solid #e7efe9}
.hero h1{font-size:36px;line-height:1.2;margin:0 0 8px}.hero p{color:var(--muted);margin:0 0 16px;max-width:760px}
.btn{display:inline-block;background:var(--brand);color:#fff;padding:12px 18px;border-radius:12px;box-shadow:var(--shadow);font-weight:600}.btn.ghost{background:#e9f7f2;color:var(--brand)}.btn:hover{filter:brightness(.98)}
.section{padding:40px 0}.section h2{font-size:24px;margin:0 0 16px}
.card{background:#fff;border:1px solid #e7efe9;border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.card .pad{padding:14px}.card img{width:100%;height:160px;object-fit:cover;background:#f3f7f6;display:block}
.badge{display:inline-block;font-size:12px;padding:4px 8px;border-radius:999px;background:#e9f7f2;color:var(--brand)}
.muted{color:var(--muted)}.note{font-size:13px;color:var(--muted)}
.table{width:100%;border-collapse:collapse}.table th,.table td{border-bottom:1px solid #e7efe9;padding:10px 8px;text-align:left}.table th{background:#f7fcfa}
.faq details{border:1px solid #e7efe9;border-radius:12px;padding:12px;margin:8px 0;background:#fff}.faq summary{cursor:pointer;font-weight:600}
.site-footer{border-top:1px solid #e7efe9;padding:24px 0;margin-top:40px;background:#fafdfb}.site-footer h4{margin:0 0 10px}.footnote{border-top:1px solid #e7efe9;margin-top:16px;padding-top:12px;text-align:center}
/* Product detail */
.prod{display:grid;grid-template-columns:1.1fr .9fr;gap:20px}
@media(max-width:980px){.prod{grid-template-columns:1fr}}
.gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;padding:8px}
.gallery img{height:220px;object-fit:cover;border-radius:12px;background:#f3f7f6}
.prose p{margin:8px 0}.prose strong{font-weight:700}.prose ul{margin:8px 0 8px 18px}.prose li{margin:4px 0}
/* Blog cards */
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:980px){.blog-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:640px){.blog-grid{grid-template-columns:1fr}}
.blog-card{border:1px solid #e7efe9;border-radius:16px;overflow:hidden;background:#fff;box-shadow:var(--shadow)}
.blog-card .thumb{height:160px;background:#e9f7f2}
.blog-card .pad{padding:14px}
.blog-card h3{margin:0 0 8px;font-size:18px}
.blog-meta{font-size:12px;color:var(--muted);margin-bottom:8px}