:root{
  --c-primary:#2e7d32;--c-primary-dark:#1b5e20;--c-accent:#ff7043;
  --c-bg:#fafaf7;--c-card:#fff;--c-text:#222;--c-muted:#666;--c-border:#e6e6e0;
  --radius:12px;--shadow:0 2px 12px rgba(0,0,0,.06);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--c-text);background:var(--c-bg);line-height:1.7;font-size:16px}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary-dark);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1180px;margin:0 auto;padding:0 20px}

/* Header */
.site-header{background:#fff;border-bottom:1px solid var(--c-border);position:sticky;top:0;z-index:50;box-shadow:var(--shadow)}
.nav{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--c-primary-dark)}
.brand img{width:40px;height:40px}
.nav-links{display:flex;gap:22px;list-style:none}
.nav-links a{color:#333;font-size:15px}
.nav-links a:hover{color:var(--c-primary)}
.menu-toggle{display:none;background:none;border:0;font-size:24px;cursor:pointer}
@media(max-width:880px){
  .nav-links{display:none;position:absolute;top:62px;left:0;right:0;background:#fff;flex-direction:column;padding:16px;border-bottom:1px solid var(--c-border)}
  .nav-links.open{display:flex}
  .menu-toggle{display:block}
}

/* Hero */
.hero{position:relative;background:linear-gradient(135deg,#e8f5e9 0%,#fff3e0 100%);padding:64px 0}
.hero-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:center}
.hero h1{font-size:38px;line-height:1.25;margin-bottom:16px;color:#1b5e20}
.hero p.lead{font-size:18px;color:#444;margin-bottom:24px}
.btn{display:inline-block;padding:12px 26px;border-radius:8px;background:var(--c-primary);color:#fff!important;font-weight:600;border:0;cursor:pointer;transition:.2s}
.btn:hover{background:var(--c-primary-dark);text-decoration:none}
.btn-outline{background:transparent;color:var(--c-primary)!important;border:2px solid var(--c-primary);margin-left:10px}
.hero img{border-radius:var(--radius);box-shadow:var(--shadow)}
@media(max-width:780px){.hero-grid{grid-template-columns:1fr}.hero h1{font-size:28px}}

/* Sections */
section{padding:56px 0}
h2.section-title{font-size:28px;text-align:center;margin-bottom:8px;color:#1b5e20}
.section-sub{text-align:center;color:var(--c-muted);margin-bottom:36px}

/* Card grid */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.card{background:var(--c-card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .2s}
.card:hover{transform:translateY(-4px)}
.card img{aspect-ratio:4/3;object-fit:cover;width:100%}
.card-body{padding:18px}
.card-body h3{font-size:18px;margin-bottom:8px;color:#1b5e20}
.card-body p{color:var(--c-muted);font-size:14px;margin-bottom:12px}
.tag{display:inline-block;background:#e8f5e9;color:var(--c-primary-dark);padding:3px 10px;border-radius:20px;font-size:12px;margin-right:6px}

/* Article */
article.post{max-width:760px;margin:0 auto;background:#fff;padding:40px;border-radius:var(--radius);box-shadow:var(--shadow)}
article.post h1{font-size:32px;color:#1b5e20;margin-bottom:12px}
article.post .meta{color:var(--c-muted);font-size:14px;margin-bottom:24px}
article.post h2{font-size:22px;margin:28px 0 12px;color:#2e7d32}
article.post h3{font-size:18px;margin:20px 0 10px}
article.post p,article.post li{margin-bottom:12px}
article.post ul,article.post ol{padding-left:24px;margin-bottom:16px}
article.post img{border-radius:8px;margin:20px 0}
.recipe-info{display:flex;gap:20px;flex-wrap:wrap;padding:16px;background:#f1f8e9;border-radius:8px;margin:20px 0}
.recipe-info div{flex:1;min-width:100px;text-align:center}
.recipe-info strong{display:block;color:var(--c-primary-dark);font-size:20px}
.recipe-info span{color:var(--c-muted);font-size:13px}

/* Calc */
.calc-form{max-width:560px;margin:0 auto;background:#fff;padding:30px;border-radius:var(--radius);box-shadow:var(--shadow)}
.calc-form label{display:block;margin-bottom:6px;font-weight:600}
.calc-form input,.calc-form select{width:100%;padding:10px;margin-bottom:16px;border:1px solid var(--c-border);border-radius:6px;font-size:15px}
.calc-result{margin-top:20px;padding:20px;background:#e8f5e9;border-radius:8px;text-align:center}
.calc-result strong{display:block;font-size:32px;color:var(--c-primary-dark);margin:8px 0}

/* FAQ */
.faq-item{background:#fff;border-radius:8px;margin-bottom:12px;box-shadow:var(--shadow);overflow:hidden}
.faq-q{padding:16px 20px;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center}
.faq-a{padding:0 20px;max-height:0;overflow:hidden;transition:.3s;color:#555}
.faq-item.open .faq-a{padding:0 20px 16px;max-height:400px}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-q::after{content:"+";font-size:22px;transition:.2s}

/* Footer */
footer{background:#1b3a1d;color:#cfd8c7;padding:48px 0 20px;margin-top:60px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:30px;margin-bottom:30px}
footer h4{color:#fff;margin-bottom:14px;font-size:16px}
footer ul{list-style:none}
footer li{margin-bottom:8px}
footer a{color:#cfd8c7;font-size:14px}
footer a:hover{color:#fff}
.copyright{text-align:center;padding-top:20px;border-top:1px solid #2d4d2f;color:#9bab93;font-size:13px}

/* Breadcrumb */
.crumb{padding:12px 0;font-size:13px;color:var(--c-muted)}
.crumb a{color:var(--c-primary-dark)}