*{box-sizing:border-box}html{font-size:16px;scroll-behavior:smooth}body{margin:0;line-height:1.7}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline;text-underline-offset:.2em}.wrap{width:min(1120px,calc(100% - 36px));margin:auto}.site-head{position:sticky;top:0;z-index:5}.head-inner{min-height:66px;display:flex;align-items:center;justify-content:space-between;gap:2rem}.brand-group{display:flex;align-items:baseline;gap:1rem}.site-nav{display:flex;gap:1.2rem;font-size:.82rem}.home-hero p{color:var(--muted);margin:1.5rem 0 0}.section-title{font-size:.85rem;letter-spacing:.09em;margin:3rem 0 1rem;color:var(--muted)}.tool-card h2{font-size:1.15rem;margin:0 0 .35rem}.tool-card p{font-size:.9rem;color:var(--muted);margin:0}.page-main{padding:4rem 0 6rem}.page-main h1{font-size:clamp(2rem,5vw,3.8rem);line-height:1.1;letter-spacing:-.035em;margin:.5rem 0 1rem}.lead{font-size:1.04rem;max-width:46rem;color:var(--muted);margin-bottom:2.5rem}.calc-box{max-width:760px}.input-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.1rem 1.4rem}.field label{display:block;font-size:.82rem;font-weight:700;margin-bottom:.35rem}.input-wrap{display:flex;align-items:center;border:1px solid var(--line);background:#fff}.input-wrap:focus-within{outline:2px solid var(--accent);outline-offset:1px}.input-wrap input{width:100%;min-width:0;border:0;background:transparent;padding:.72rem .8rem;font:inherit;color:var(--ink);outline:none}.unit{padding-right:.75rem;color:var(--muted);font-size:.8rem;white-space:nowrap}.actions{margin-top:1.5rem}.primary{font:inherit;font-weight:700;padding:.75rem 1.25rem;cursor:pointer}.result-box{display:none;margin-top:1.6rem;border-top:1px solid var(--line);padding-top:1.2rem}.result-box.visible{display:block}.result-row{display:flex;justify-content:space-between;gap:1rem;padding:.55rem 0;border-bottom:1px dotted var(--line)}.result-row span{color:var(--muted);font-size:.9rem}.result-row strong{text-align:right}.error{color:#8f2d25;font-size:.9rem;margin-top:1rem}.notes{max-width:760px;margin-top:3rem;display:grid;grid-template-columns:1fr 1fr;gap:2.5rem}.notes h2{font-size:1rem;margin:0 0 .55rem}.notes p{color:var(--muted);font-size:.91rem;margin:0}.site-foot{border-top:1px solid var(--line);padding:2rem 0 4rem;color:var(--muted);font-size:.8rem}.foot-inner{display:flex;justify-content:space-between;gap:2rem}.about{max-width:760px}.about h2{margin-top:2.5rem}.about p,.about li{color:var(--muted)}.ad-slot{margin:2.8rem 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:1rem 0;font-size:.72rem;color:var(--muted);text-align:center;letter-spacing:.08em}.ad-slot:before{content:'ADVERTISEMENT';opacity:.65}.affiliate-note{font-size:.75rem;color:var(--muted);margin-top:2rem}.smallprint{font-size:.76rem;color:var(--muted)}
@media(max-width:760px){.head-inner{min-height:58px}.tagline,.site-nav{display:none}.home-hero{padding-top:3.8rem!important}.tool-list{display:block!important;background:transparent!important;border:0!important}.tool-card{display:block!important;padding:1.25rem 0!important;border-left:0!important;min-height:0!important}.tool-card a{display:block!important}.tool-card .tool-no{display:block;margin:0 0 .3rem}.input-grid{grid-template-columns:1fr}.notes{grid-template-columns:1fr;gap:1.5rem}.foot-inner{display:block}.page-main{padding-top:3rem}}

body{--ink:#171a17;--muted:#626861;--paper:#e9ece6;--line:#919b90;--accent:#465f43;--panel:#f7f8f4;font-family:"Arial Narrow",Arial,"Yu Gothic",sans-serif;background:var(--paper);color:var(--ink)}.site-head{background:var(--ink);color:#fff}.site-head a{color:#fff}.brand{font-weight:800;text-transform:uppercase;letter-spacing:.08em}.tagline{font-size:.78rem;color:#c8cec7}.home-hero{padding:4rem 0 2rem;border-bottom:4px double var(--line)}.home-hero h1{font-size:clamp(2.1rem,6vw,4.4rem);text-transform:uppercase;letter-spacing:-.04em}.tool-list{display:table;width:100%;border-collapse:collapse}.tool-card{display:table-row}.tool-card>*{border-bottom:1px solid var(--line);padding:1.2rem .5rem}.tool-card a{display:grid;grid-template-columns:3.5rem 15rem 1fr;gap:1rem;align-items:start}.tool-no{font-family:ui-monospace,monospace}.calc-box{background:var(--panel);border:1px solid var(--ink);padding:1.5rem}.primary{background:var(--ink);color:white;border:0;border-radius:0;text-transform:uppercase;letter-spacing:.08em}.eyebrow{font-family:ui-monospace,monospace;color:var(--accent)}
@media(max-width:760px){
.home-hero{padding:3.7rem 0 2rem!important}
.home-hero h1{font-size:clamp(1.8rem,7.8vw,2.6rem);line-height:1.28;max-width:none}
.home-hero h1 .hero-line{display:block;white-space:nowrap}
.home-hero p{margin-top:1rem}
.home-hero+.wrap .section-title{margin-top:2rem}
.tool-card a:hover{text-decoration:none}
}