:root{--forest:#1a3a2e;--forest-deep:#0f2a20;--cream:#faf6ee;--gold:#c9a961;--ink:#2c2416;--sand:#f3ecdb}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Lato',sans-serif;background:var(--cream);color:var(--ink);line-height:1.7;font-weight:400}
a{color:var(--forest);text-decoration:none}
a:hover{color:var(--gold)}

.site-nav{background:var(--forest);padding:.95rem 2rem;display:flex;align-items:center;justify-content:space-between;gap:1rem;border-bottom:1px solid rgba(201,169,97,.35)}
.nav-brand{font-family:'Playfair Display',serif;color:#faf6ee;font-size:1.25rem;font-weight:600;letter-spacing:.3px}
.nav-brand span{color:var(--gold)}
.nav-links{display:flex;align-items:center;gap:.25rem;flex-wrap:wrap}
.nav-links a{color:rgba(255,255,255,.82);padding:.45rem .8rem;font-size:.92rem;letter-spacing:.4px;border-radius:2px}
.nav-links a:hover{color:var(--gold);background:rgba(250,246,238,.06)}

.hero{background:linear-gradient(145deg,#0b1d16 0%,var(--forest-deep) 45%,var(--forest) 100%);color:var(--cream);padding:80px 32px 56px;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 20% 20%,rgba(201,169,97,.12),transparent 40%),radial-gradient(circle at 80% 70%,rgba(201,169,97,.08),transparent 40%);pointer-events:none}
.hero-inner{max-width:980px;margin:0 auto;position:relative}
.hero-kicker{color:var(--gold);font-size:.78rem;letter-spacing:2.6px;text-transform:uppercase;margin-bottom:16px;font-weight:700}
.hero h1{font-family:'Playfair Display',serif;font-size:3rem;font-weight:600;letter-spacing:-.6px;line-height:1.12;margin-bottom:20px;max-width:800px}
.hero h1 em{color:var(--gold);font-style:italic}
.hero-lede{font-size:1.15rem;max-width:700px;line-height:1.65;color:rgba(250,246,238,.88);margin-bottom:24px}
.hero-meta{display:flex;flex-wrap:wrap;gap:22px;font-size:.82rem;color:rgba(250,246,238,.65);border-top:1px solid rgba(201,169,97,.25);padding-top:22px}
.hero-meta span strong{color:var(--gold);display:block;font-size:.7rem;letter-spacing:1.3px;text-transform:uppercase;margin-bottom:2px}

/* Two-column layout: sticky TOC + content */
.wrap{max-width:1100px;margin:60px auto;padding:0 32px;display:grid;grid-template-columns:220px 1fr;gap:56px}
.toc{position:sticky;top:24px;align-self:start;font-size:.88rem}
.toc h4{font-family:'Playfair Display',serif;font-size:.9rem;color:var(--forest-deep);font-weight:600;letter-spacing:.8px;margin-bottom:12px;text-transform:uppercase}
.toc ol{list-style:none;margin:0;padding:0;border-left:1px solid rgba(201,169,97,.35)}
.toc li a{display:block;padding:7px 0 7px 14px;color:#4a4235;line-height:1.4;border-left:2px solid transparent;margin-left:-1px;transition:all .2s}
.toc li a:hover{color:var(--forest);border-left-color:var(--gold);background:rgba(201,169,97,.06)}

.article h2{font-family:'Playfair Display',serif;font-size:1.9rem;color:var(--forest-deep);font-weight:600;letter-spacing:-.3px;margin:44px 0 14px;line-height:1.2;scroll-margin-top:24px}
.article h2:first-of-type{margin-top:0}
.article h2 em{color:var(--gold);font-style:italic}
.article h3{font-family:'Playfair Display',serif;font-size:1.25rem;color:var(--forest-deep);margin:30px 0 10px;font-weight:600}
.article p{font-size:1.02rem;line-height:1.76;color:#3a3220;margin-bottom:18px}
.article ul{margin:4px 0 18px 1.4rem}
.article li{margin-bottom:8px;line-height:1.7;color:#3a3220}
.article code{background:var(--sand);padding:2px 6px;border-radius:2px;font-size:.92em;color:#4a4235;font-family:Menlo,Monaco,Consolas,monospace}

.calc-block{background:#fff;border:1px solid rgba(201,169,97,.3);padding:26px 30px;border-radius:3px;margin:20px 0;box-shadow:0 8px 24px rgba(26,58,46,.05)}
.calc-block h3{margin-top:0;font-family:'Playfair Display',serif;font-size:1.2rem;color:var(--forest-deep);margin-bottom:6px}
.calc-block .cb-sub{font-size:.82rem;color:#6b6353;margin-bottom:16px;font-style:italic}
.calc-block dl{display:grid;grid-template-columns:160px 1fr;gap:10px 24px;font-size:.92rem;margin:10px 0}
.calc-block dt{color:#6b6353;font-weight:700;font-size:.76rem;letter-spacing:.8px;text-transform:uppercase;padding-top:2px}
.calc-block dd{margin:0;line-height:1.55;color:#3a3220}
.calc-block .cb-link{display:inline-block;margin-top:12px;font-size:.85rem;color:var(--forest);border-bottom:1px dotted rgba(26,58,46,.4);padding-bottom:2px}
.calc-block .cb-link:hover{color:var(--gold);border-bottom-color:var(--gold)}

.constants-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin:18px 0}
.constant{background:var(--sand);padding:14px 16px;border-radius:3px;border-left:3px solid var(--gold)}
.constant .c-val{font-family:'Playfair Display',serif;font-size:1.3rem;color:var(--forest-deep);font-weight:600;line-height:1.2;margin-bottom:2px}
.constant .c-label{font-size:.78rem;color:#6b6353;line-height:1.4;letter-spacing:.3px}

.callout{background:#fffaf0;border:1px solid rgba(201,169,97,.45);border-left:3px solid var(--gold);padding:18px 22px;border-radius:3px;margin:20px 0}
.callout strong{color:var(--forest-deep)}

.review-table{width:100%;border-collapse:collapse;margin:18px 0;font-size:.92rem}
.review-table th{text-align:left;padding:10px 12px;background:var(--forest);color:var(--cream);font-family:'Playfair Display',serif;font-weight:600;font-size:.85rem;letter-spacing:.4px}
.review-table td{padding:10px 12px;border-bottom:1px solid rgba(201,169,97,.3);color:#3a3220;vertical-align:top;line-height:1.55}
.review-table tr:last-child td{border-bottom:none}
.review-table tr:nth-child(even) td{background:rgba(243,236,219,.35)}

.site-footer{background:var(--forest);padding:40px 40px 28px;color:rgba(255,255,255,.55);margin-top:60px}
.footer-cols{display:grid;grid-template-columns:repeat(4,1fr);gap:40px;margin-bottom:30px;max-width:1200px;margin-left:auto;margin-right:auto}
.footer-cols h4{font-family:'Playfair Display',serif;font-size:.95rem;color:#fff;margin-bottom:14px;font-weight:600}
.footer-cols a{font-size:.82rem;display:block;color:rgba(255,255,255,.65);margin-bottom:8px;transition:color .2s}
.footer-cols a:hover{color:var(--gold)}
.fi{max-width:1200px;margin:0 auto;padding-top:20px;border-top:1px solid rgba(201,169,97,.25)}
.fb{font-family:'Playfair Display',serif;color:var(--cream);font-size:1.05rem;margin-bottom:8px}
.fb span{color:var(--gold)}
.fd{font-size:.8rem;line-height:1.6;color:rgba(255,255,255,.55);max-width:680px}
.fc{font-size:.78rem;color:rgba(255,255,255,.45);margin-top:12px}
.fc a{color:var(--gold)}

@media (max-width:880px){
  .wrap{grid-template-columns:1fr;gap:24px}
  .toc{position:static;border-bottom:1px solid rgba(201,169,97,.3);padding-bottom:16px}
  .hero h1{font-size:2.2rem}
  .calc-block dl{grid-template-columns:1fr}
  .footer-cols{grid-template-columns:1fr 1fr;gap:24px}
}