:root {
  --bg:#f8f7f4;--surface:#fff;--surface-alt:#f0efec;--border:#e2e0db;
  --text:#1a1a18;--text-mid:#4a4a45;--text-dim:#8a8a82;
  --red:#cc0000;--red-bg:#fef2f2;--red-border:#fecaca;
  --accent:#1a5c3a;--accent-bg:#ecfdf5;--accent-border:#a7f3d0;
  --radius:10px;--shadow:0 1px 3px rgba(0,0,0,0.06);--shadow-lg:0 10px 25px rgba(0,0,0,0.06);
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Plus Jakarta Sans',sans-serif;background:var(--bg);color:var(--text);line-height:1.7}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
nav{background:var(--surface);border-bottom:1px solid var(--border);padding:0 24px;position:sticky;top:0;z-index:100}
.nav-inner{max-width:1080px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:56px}
.nav-brand{font-weight:800;font-size:18px;color:var(--text);letter-spacing:-.5px}
.nav-brand span{color:var(--red)}
.nav-links{display:flex;gap:24px;font-size:14px;font-weight:500}
.nav-links a{color:var(--text-mid)}.nav-links a:hover{color:var(--text);text-decoration:none}
.container{max-width:1080px;margin:0 auto;padding:0 24px}
.hero{padding:64px 24px 48px;text-align:center;max-width:1080px;margin:0 auto}
.hero-badge{display:inline-block;font-family:'JetBrains Mono',monospace;font-size:12px;font-weight:500;color:var(--accent);background:var(--accent-bg);border:1px solid var(--accent-border);padding:4px 14px;border-radius:100px;margin-bottom:20px;letter-spacing:.5px}
h1{font-size:clamp(28px,5vw,48px);font-weight:800;line-height:1.1;letter-spacing:-1.5px;margin-bottom:16px}
h1 em{font-style:normal;color:var(--red)}
.subtitle{font-size:18px;color:var(--text-mid);max-width:560px;margin:0 auto 32px}
.section{max-width:1080px;margin:0 auto;padding:0 24px 64px}
.section-label{font-family:'JetBrains Mono',monospace;font-size:12px;font-weight:500;color:var(--text-dim);text-transform:uppercase;letter-spacing:1.5px;margin-bottom:12px}
.section h2{font-size:clamp(24px,3.5vw,36px);font-weight:800;letter-spacing:-.8px;margin-bottom:8px}
.lead{font-size:16px;color:var(--text-mid);margin-bottom:32px;max-width:640px}
/* Cards */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);margin-bottom:16px}
.card:hover{box-shadow:var(--shadow-lg)}
.card h3{font-size:18px;font-weight:700;margin-bottom:8px}
.card p{font-size:14px;color:var(--text-mid);line-height:1.6}
/* Symbol page */
.symbol-hero{display:flex;align-items:center;gap:32px;padding:48px 0;flex-wrap:wrap}
.symbol-hero img{width:140px;height:140px}
.symbol-hero h1{text-align:left;margin-bottom:8px}
.symbol-meta{font-family:'JetBrains Mono',monospace;font-size:14px;color:var(--red);margin-bottom:12px}
.info-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:32px}
.info-box{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px}
.info-box h4{font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;margin-bottom:10px;color:var(--text)}
.info-box ul{list-style:none;padding:0}
.info-box li{font-size:14px;color:var(--text-mid);padding:3px 0}
.info-box li:before{content:"→ ";color:var(--red)}
/* Calculator */
.calc-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:32px;box-shadow:var(--shadow-lg);margin-bottom:32px}
.calc-card h3{font-size:18px;font-weight:700;margin-bottom:16px}
.calc-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:12px}
select.calc-sel,input.calc-inp{font-family:'Plus Jakarta Sans',sans-serif;font-size:14px;padding:10px 14px;border-radius:8px;border:1.5px solid var(--border);background:var(--surface);color:var(--text);outline:none}
select.calc-sel{appearance:none;cursor:pointer;padding-right:32px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238a8a82' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center}
.calc-out{font-family:'JetBrains Mono',monospace;font-size:14px;color:var(--accent);background:var(--accent-bg);border:1px solid var(--accent-border);padding:10px 18px;border-radius:8px}
.calc-btn{font-family:'Plus Jakarta Sans',sans-serif;font-size:14px;font-weight:600;padding:10px 24px;border-radius:8px;border:none;background:var(--accent);color:#fff;cursor:pointer}
.calc-btn:hover{background:#164e32}
/* CTA */
.cta-banner{background:linear-gradient(135deg,#1a5c3a 0%,#0f4028 100%);border-radius:16px;padding:40px;color:#fff;display:flex;align-items:center;justify-content:space-between;gap:32px;margin-bottom:48px;flex-wrap:wrap}
.cta-banner h3{font-size:22px;font-weight:700;margin-bottom:6px}
.cta-banner p{font-size:14px;opacity:.8}
.cta-form{display:flex;gap:8px}
.cta-email{font-family:'Plus Jakarta Sans',sans-serif;font-size:14px;padding:12px 16px;border-radius:8px;border:2px solid rgba(255,255,255,.2);background:rgba(255,255,255,.1);color:#fff;outline:none;width:260px}
.cta-email::placeholder{color:rgba(255,255,255,.5)}
.cta-submit{font-family:'Plus Jakarta Sans',sans-serif;font-size:14px;font-weight:600;padding:12px 24px;border-radius:8px;border:none;background:#fff;color:#1a5c3a;cursor:pointer;white-space:nowrap}
/* Blog */
.blog-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
.blog-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:all .2s}
.blog-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.blog-card .tag{font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--accent);background:var(--accent-bg);padding:2px 8px;border-radius:4px;margin-bottom:10px;display:inline-block}
.blog-card h3{font-size:16px;font-weight:700;margin-bottom:6px}
.blog-card h3 a{color:var(--text)}
.blog-card p{font-size:13px;color:var(--text-dim)}
/* Article */
.article{max-width:720px;margin:0 auto;padding:48px 24px}
.article h1{font-size:clamp(24px,4vw,38px);margin-bottom:16px;text-align:left}
.article .meta{font-size:13px;color:var(--text-dim);margin-bottom:32px}
.article h2{font-size:22px;font-weight:700;margin:32px 0 12px;letter-spacing:-.3px}
.article p{font-size:16px;color:var(--text-mid);margin-bottom:16px}
.article ul{margin:0 0 16px 20px;color:var(--text-mid)}
.article li{margin-bottom:6px;font-size:15px}
/* Nav symbols grid */
.symbols-nav{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px;margin-bottom:32px}
.sym-nav-card{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:14px 10px;text-align:center;transition:all .15s}
.sym-nav-card:hover{border-color:var(--red);text-decoration:none}
.sym-nav-card img{width:48px;height:48px;margin-bottom:6px}
.sym-nav-card span{display:block;font-size:12px;font-weight:600;color:var(--text)}
.sym-nav-card.active{border-color:var(--red);background:var(--red-bg)}
/* Footer */
footer{max-width:1080px;margin:0 auto;padding:32px 24px;border-top:1px solid var(--border);display:flex;justify-content:space-between;font-size:13px;color:var(--text-dim);flex-wrap:wrap;gap:12px}
footer a{color:var(--text-dim)}
/* Breadcrumb */
.breadcrumb{font-size:13px;color:var(--text-dim);margin-bottom:8px}
.breadcrumb a{color:var(--text-dim)}
/* Responsive */
@media(max-width:700px){
  .info-grid{grid-template-columns:1fr}.symbol-hero{flex-direction:column;text-align:center}
  .cta-banner{flex-direction:column;text-align:center}.cta-form{width:100%}.cta-email{width:100%;flex:1}
  .nav-links{gap:16px;font-size:13px}.symbols-nav{grid-template-columns:repeat(3,1fr)}
}