:root{color-scheme:light;--color-ink:#1f2523;--color-muted:#52605b;--color-paper:#fbfbf7;--color-surface:#fff;--color-line:#d8e1dc;--color-primary:#0b6b61;--color-primary-strong:#064f49;--color-primary-soft:#dcefeb;--color-accent:#b55b45;--color-accent-soft:#f8e4dc;--color-gold:#b87a00;--color-gold-soft:#fff1c8;--color-focus:#6b3fd9;--shadow-soft:0 10px 24px #1f25231a;--radius-sm:6px;--radius-md:8px;--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-5:1.5rem;--space-6:2rem;--space-7:3rem;--font-body:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif}*{box-sizing:border-box}html{font-family:var(--font-body);background:var(--color-paper);color:var(--color-ink);scrollbar-gutter:stable;overflow-y:scroll}body{margin:0;line-height:1.6}a{color:var(--color-primary-strong);text-underline-offset:.18em}a:hover{color:var(--color-accent)}:focus-visible{outline:3px solid var(--color-focus);outline-offset:3px}.site-shell{flex-direction:column;min-height:100vh;display:flex}.site-header,.site-footer{background:var(--color-surface);border-color:var(--color-line)}.site-header{z-index:10;border-bottom:1px solid var(--color-line);position:sticky;top:0;box-shadow:0 2px 14px #1f252312}.site-footer{border-top:1px solid var(--color-line);margin-top:auto}.container{width:min(1120px,100% - 2rem);margin-inline:auto}.header-inner,.footer-inner{justify-content:space-between;align-items:center;gap:var(--space-5);padding-block:.65rem;display:flex}.brand{align-items:center;gap:var(--space-2);color:var(--color-ink);font-weight:800;text-decoration:none;display:inline-flex}.brand-icon{border-radius:var(--radius-sm);background:var(--color-primary);color:#fff;letter-spacing:0;place-items:center;width:2.25rem;height:2.25rem;font-size:.8rem;display:inline-grid}.brand-mark{color:var(--color-primary)}.site-nav{align-items:center;gap:var(--space-2);flex-wrap:wrap;min-width:0;margin-left:auto;display:flex}.nav-list,.footer-links{gap:var(--space-1);flex-wrap:wrap;margin:0;padding:0;list-style:none;display:flex}.footer-links{gap:var(--space-3)}.nav-link{border-radius:var(--radius-sm);min-height:40px;color:var(--color-ink);align-items:center;padding:.35rem .65rem;font-weight:700;text-decoration:none;display:inline-flex}.nav-link.is-active{background:var(--color-primary-soft);color:var(--color-primary-strong)}.nav-link.is-current{box-shadow:inset 0 -3px 0 var(--color-primary)}.header-cta{border-radius:var(--radius-sm);background:var(--color-ink);color:#fff;justify-content:center;align-items:center;min-height:40px;padding:.45rem .8rem;font-weight:800;text-decoration:none;display:inline-flex}.header-cta.is-active{background:var(--color-primary)}.hero,.page-section{padding-block:var(--space-7)}.hero{background:linear-gradient(135deg, #dcefebeb, #fbfbf7f5), linear-gradient(90deg, var(--color-primary-soft), var(--color-gold-soft));align-items:center;min-height:calc(100vh - 62px);padding-block:clamp(1rem,3vh,2rem);display:flex}.hero-grid{align-items:center;gap:var(--space-5);grid-template-columns:minmax(320px,.85fr) minmax(520px,1.15fr);display:grid}.calculator-page-hero{align-items:flex-start;padding-block:clamp(.75rem,2vh,1.25rem)}.calculator-page-hero h1{margin-bottom:var(--space-2);font-size:clamp(1.9rem,3.3vw,2.75rem)}.hero-copy{margin-block:var(--space-3);font-size:1.12rem}.calculator-page-hero .container>p:not(.eyebrow){margin-block:var(--space-2) var(--space-3)}.calculator-page-hero .calculator-panel{gap:var(--space-4);margin-top:var(--space-3);padding:var(--space-4)}.calculator-page-hero .input-grid{gap:var(--space-3);margin-block:var(--space-3)}.calculator-page-hero .result-panel{padding:var(--space-4)}.hero-actions{gap:var(--space-3);margin-top:var(--space-4);flex-wrap:wrap;display:flex}.hero-panel{padding:var(--space-4);border:1px solid var(--color-line);border-radius:var(--radius-md);background:var(--color-surface);box-shadow:var(--shadow-soft)}.panel-kicker{margin:0 0 var(--space-2);color:var(--color-accent);font-weight:800}.hero-panel dl{gap:var(--space-2);margin:var(--space-3) 0 0;display:grid}.hero-panel dl div{border-top:1px solid var(--color-line);padding-top:var(--space-2)}.hero-panel dt{color:var(--color-muted);font-weight:800}.hero-panel dd{margin:var(--space-1) 0 0}.eyebrow{color:var(--color-accent);margin:0 0 var(--space-2);font-weight:700}h1,h2,h3{margin:0 0 var(--space-3);line-height:1.18}h1{max-width:760px;font-size:clamp(2rem,4vw,3.15rem)}h2{font-size:clamp(1.5rem,3vw,2.2rem)}p{max-width:780px}.grid{gap:var(--space-4);display:grid}.card-grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}.card,.calculator-panel{background:var(--color-surface);border:1px solid var(--color-line);border-radius:var(--radius-md);box-shadow:var(--shadow-soft)}.card{padding:var(--space-5)}.button{border-radius:var(--radius-sm);border:2px solid var(--color-primary);background:var(--color-primary);color:#fff;justify-content:center;align-items:center;min-height:44px;padding:.65rem 1rem;font-weight:700;text-decoration:none;display:inline-flex}.button.secondary{color:var(--color-primary-strong);background:0 0}.content-section{border-top:1px solid var(--color-line)}.calculator-panel{gap:var(--space-5);padding:var(--space-5);grid-template-columns:minmax(0,1.1fr) minmax(260px,.9fr);display:grid}.hero-calculator .calculator-panel{gap:var(--space-4);padding:var(--space-4);grid-template-columns:minmax(0,.95fr) minmax(230px,.85fr)}.hero-directory{gap:var(--space-4);display:grid}.feature-card{padding:var(--space-5);border:1px solid var(--color-line);border-left:6px solid var(--color-primary);border-radius:var(--radius-md);background:var(--color-surface);box-shadow:var(--shadow-soft)}.feature-card h2{margin-bottom:var(--space-2);font-size:clamp(1.35rem,2.4vw,1.8rem)}.feature-card p:last-child{margin-bottom:0}.calculator-form h2{font-size:1.4rem}.input-grid{gap:var(--space-4);margin-block:var(--space-4);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.hero-calculator .input-grid{gap:var(--space-3);margin-block:var(--space-3)}.input-grid label{gap:var(--space-2);font-weight:700;display:grid}.input-row{border:1px solid var(--color-line);border-radius:var(--radius-sm);background:var(--color-surface);grid-template-columns:minmax(0,1fr) auto;align-items:center;display:grid;overflow:hidden}.input-row input,.input-row select{width:100%;min-height:44px;color:var(--color-ink);font:inherit;background:var(--color-surface);border:0;padding:.65rem}.input-row span{min-width:3rem;padding-inline:var(--space-3);color:var(--color-muted);text-align:center}.result-panel{border-radius:var(--radius-md);background:var(--color-gold-soft);padding:var(--space-5)}.hero-calculator .result-panel{padding:var(--space-4)}.result-label{color:var(--color-muted);margin:0;font-weight:700}.result-value{align-items:baseline;gap:var(--space-2);margin:var(--space-2) 0 var(--space-4);flex-wrap:wrap;font-size:clamp(2rem,8vw,3.4rem);font-weight:800;line-height:1;display:flex}.result-unit{font-size:.45em;line-height:1.15}.hero-calculator .result-value{font-size:clamp(1.8rem,4vw,2.6rem)}.result-panel dl{gap:var(--space-3);margin:0;display:grid}.result-panel dl div{justify-content:space-between;gap:var(--space-3);padding-top:var(--space-3);border-top:1px solid #1f25232e;display:flex}.result-panel dt{color:var(--color-muted)}.result-panel dd{margin:0;font-weight:800}details{border-top:1px solid var(--color-line);max-width:780px;padding-block:var(--space-3)}summary{cursor:pointer;font-weight:800}@media (width<=900px){.hero-grid{gap:var(--space-5);grid-template-columns:1fr}.hero{min-height:auto}}@media (width<=640px){.header-inner,.footer-inner{flex-direction:column;align-items:flex-start}.site-nav{align-items:flex-start;margin-left:0}.header-cta{width:100%}.calculator-panel,.input-grid{grid-template-columns:1fr}}