.container{max-width:var(--container-max);margin:0 auto;padding:32px 48px}

/* Header */
.site-header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 48px;border-bottom:1px solid var(--border-default);background:var(--white)}
.site-header.compact{padding:18px 48px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:800;font-size:20px;color:var(--text-primary)}
.brand img{height:28px}
.brand .dot{color:var(--brand-primary)}
.site-nav{display:flex;gap:28px;font-size:15px;font-weight:600;color:var(--text-secondary)}
.site-nav a{color:inherit}
.site-nav a:hover{color:var(--text-link-hover)}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;border:1px solid var(--border-strong);background:var(--white);border-radius:var(--radius-md);width:40px;height:40px;align-items:center;justify-content:center;cursor:pointer}
.mobile-nav{display:none}

/* Footer */
.site-footer{padding:32px 48px;border-top:1px solid var(--border-default);display:flex;justify-content:space-between;gap:8px;font-size:13px;color:var(--text-muted);flex-wrap:wrap}

/* Hero */
.hero{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--green-800),var(--green-600));padding:80px 48px;text-align:center}
.hero-circle-a{position:absolute;width:420px;height:420px;border-radius:50%;background:var(--brand-accent);opacity:.14;top:-200px;right:-140px}
.hero-circle-b{position:absolute;width:260px;height:260px;border-radius:50%;background:var(--white);opacity:.06;bottom:-140px;left:-80px}
.hero-inner{position:relative;max-width:720px;margin:0 auto}
.hero h1{font-size:46px;color:var(--white);margin:0 0 12px;line-height:1.15}
.hero p{font-size:18px;color:var(--green-100);margin:0 0 28px}
.hero-search{display:flex;justify-content:center}
.hero-search form{display:flex;background:var(--white);border-radius:var(--radius-md);overflow:hidden;width:520px;max-width:100%;box-shadow:0 20px 48px rgba(10,61,41,.35)}
.hero-search input{flex:1;border:none;outline:none;padding:14px 18px;font-size:15px;font-family:var(--font-body)}
.hero-search .btn{border-radius:0}

/* Category / calculator grids */
.section{padding:56px 48px;max-width:var(--container-max);margin:0 auto}
.section h2{font-size:26px;margin:0 0 20px}
.category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.category-card-top{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:12px}
.category-icon{width:40px;height:40px;border-radius:var(--radius-md);background:var(--green-50);display:flex;align-items:center;justify-content:center}
.category-icon img{width:20px;height:20px}
.category-card-name{font-weight:700;font-size:17px;margin-bottom:4px}
.category-card-desc{font-size:14px;color:var(--text-secondary)}

.calc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.calc-card{display:flex;flex-direction:column;gap:10px}
.calc-card-top{display:flex;justify-content:space-between;align-items:flex-start;gap:8px}
.calc-card-name{font-weight:700;font-size:17px}
.calc-card-desc{font-size:14px;color:var(--text-secondary);flex:1}
.calc-card-link{align-self:flex-start;font-size:14px;font-weight:600;color:var(--brand-primary)}

.popular-list{display:flex;flex-wrap:wrap;gap:12px}
.popular-pill{display:flex;align-items:center;gap:10px;background:var(--white);border:1px solid var(--border-default);border-radius:var(--radius-full);padding:10px 18px;font-size:14px;font-weight:600;color:var(--text-primary)}

/* Calculator tool page */
.tool-head{display:flex;align-items:flex-end;justify-content:space-between;margin-top:16px;margin-bottom:6px;gap:16px;flex-wrap:wrap}
.tool-head h1{font-size:36px}
.tool-intro{color:var(--text-secondary);font-size:16px;margin:0 0 18px;max-width:640px}
.tool-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;margin-top:28px;align-items:flex-start}
.tool-inputs{display:flex;flex-direction:column;gap:20px}
.tool-actions{display:flex;gap:12px;margin-top:8px}
.result-panel{background:linear-gradient(180deg,var(--green-50),var(--white) 140px);border:1px solid var(--border-default);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:32px;position:sticky;top:24px}
.result-secondary{display:flex;gap:32px;margin-top:24px;padding-top:24px;border-top:1px solid var(--border-default);flex-wrap:wrap}
.result-disclaimer{font-size:12px;color:var(--text-muted);margin-top:24px}
.tool-explainer{max-width:720px;margin:56px auto 0;padding:0 48px}
.tool-explainer h2{font-size:22px;margin-bottom:12px}
.tool-explainer p{color:var(--text-secondary);font-size:15px;line-height:1.7;margin-bottom:12px}
.faq-section{max-width:720px;margin:16px auto 64px;padding:0 48px}
.faq-section h2{font-size:22px;margin-bottom:8px}

@media (max-width: 900px){
  .category-grid,.calc-grid{grid-template-columns:1fr}
  .tool-grid{grid-template-columns:1fr;gap:28px}
  .result-panel{position:static}
}

@media (max-width: 720px){
  .site-header,.site-header.compact{padding:16px 20px}
  .site-nav{display:none}
  .nav-toggle{display:flex}
  .container{padding:20px}
  .hero{padding:40px 20px}
  .hero h1{font-size:26px}
  .hero p{font-size:15px}
  .section{padding:32px 20px}
  .section h2{font-size:21px}
  .tool-head h1{font-size:26px}
  .tool-intro{font-size:14px}
  .tool-explainer,.faq-section{padding:0 20px}
  .site-footer{padding:20px;flex-direction:column;gap:6px}
  .mobile-nav.open{display:flex}
}

.mobile-nav{position:fixed;inset:0 0 0 auto;width:min(280px,80vw);background:var(--white);box-shadow:var(--shadow-lg);z-index:50;flex-direction:column;padding:20px;gap:4px}
.mobile-nav a{padding:12px 8px;font-weight:600;color:var(--text-primary);border-bottom:1px solid var(--border-default)}
.mobile-nav-close{align-self:flex-end;border:none;background:none;font-size:20px;cursor:pointer;color:var(--text-secondary);padding:8px}
.mobile-nav-scrim{display:none;position:fixed;inset:0;background:rgba(22,24,19,.45);z-index:40}
.mobile-nav-scrim.open{display:block}