:root{--bg:#ffffff;--surface:#f1f5f9;--text:#1e293b;--muted:#475569;--accent:#be123c;--accent-dark:#9f1239;--accent-soft:#fff1f2;--border:#cbd5e1;--border-soft:#e2e8f0;--sans:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;--mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;--r:4px;--ease:cubic-bezier(.16,1,.3,1)}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--sans);color:var(--text);background:var(--bg);line-height:1.65;overflow-wrap:anywhere;hyphens:auto}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-underline-offset:3px}a:hover{color:var(--accent-dark)}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
h1,h2,h3{line-height:1.15;letter-spacing:-.015em;margin:0 0 .75rem}
h2{font-size:clamp(1.6rem,3.2vw,2.3rem)}h3{font-size:1.2rem}
p{margin:0 0 1rem}
.wrap{max-width:1240px;margin:0 auto;padding:0 1.25rem}
.prose{max-width:70ch;margin:0 auto}
.skip{position:absolute;left:-9999px}.skip:focus{left:1rem;top:1rem;background:#fff;padding:.5rem 1rem;z-index:50;border-radius:var(--r)}
.tagline{background:var(--text);color:#f1f5f9;font:500 .76rem/1.4 var(--mono);padding:.5rem 0;letter-spacing:.02em}
.site-header{position:relative;background:#fff;border-bottom:1px solid var(--border-soft)}
.header-row{display:flex;align-items:center;justify-content:space-between;gap:1.25rem;min-height:66px}
.brand{display:flex;align-items:center;gap:.6rem;text-decoration:none;color:var(--text);font:700 1rem var(--mono);margin-right:auto;white-space:nowrap}
.brand-mark{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:var(--r);background:var(--accent);color:#fff;font:700 .72rem var(--mono)}
.site-nav ul{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:.35rem 1.05rem;list-style:none;margin:0;padding:0}
.site-nav a{font:500 .78rem var(--mono);color:var(--text);text-decoration:none;position:relative;padding:.3rem 0;white-space:nowrap}
.site-nav a::after{content:"";position:absolute;left:0;bottom:-2px;height:2px;width:100%;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .35s var(--ease)}
.site-nav a:hover::after,.site-nav a[aria-current=page]::after{transform:scaleX(1)}
.menu-toggle{display:none;border:0;background:var(--surface);color:var(--text);width:42px;height:42px;border-radius:999px;font-size:1.4rem;line-height:1;cursor:pointer}
.hero{padding:clamp(3rem,8vw,6.5rem) 0 clamp(2.5rem,6vw,4.5rem)}
.hero h1{font-size:clamp(2.6rem,7.4vw,5.8rem);line-height:1.02;letter-spacing:-.035em;max-width:15ch;margin-bottom:1.5rem}
.page-hero h1{font-size:clamp(2.2rem,5.6vw,4.3rem);max-width:18ch}
.lead{font-size:clamp(1.05rem,1.6vw,1.25rem);color:var(--muted);max-width:62ch}
.label{display:inline-block;font:600 .72rem var(--mono);text-transform:uppercase;letter-spacing:.09em;color:var(--accent);margin-bottom:.6rem}
.actions{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:1.5rem}
.btn{display:inline-flex;align-items:center;gap:.4rem;border:0;border-radius:999px;background:var(--accent);color:#fff;padding:.78rem 1.45rem;font:600 .95rem var(--sans);text-decoration:none;cursor:pointer;transition:transform .3s var(--ease),background .3s}
.btn:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px)}
.btn:focus-visible{outline:3px solid var(--text);outline-offset:3px}
.btn-soft{background:var(--accent-soft);color:var(--accent-dark)}.btn-soft:hover{background:#ffe4e6;color:var(--accent-dark)}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none}
.band{padding:clamp(3rem,6vw,4.75rem) 0}.band-alt{background:var(--surface)}
.section-head{max-width:70ch;margin-bottom:2rem}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(300px,100%),1fr));gap:1.25rem}
.grid-4{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(250px,100%),1fr));gap:1.25rem}
.panel{background:#fff;border:1px solid var(--border);border-radius:var(--r);padding:1.4rem;transition:border-color .3s,transform .35s var(--ease)}
.panel-link{display:flex;flex-direction:column;text-decoration:none;color:var(--text)}
.panel-link:hover{border-color:var(--accent);transform:translateY(-6px) scale(1.01);color:var(--text)}
.panel-link .more{margin-top:auto;font:600 .82rem var(--mono);color:var(--accent)}
.panel p{color:var(--muted)}
.media{aspect-ratio:4/3;overflow:hidden;border-radius:var(--r);background:var(--surface);margin-bottom:1rem}
.media img{width:100%;height:100%;object-fit:cover}
.media.wide{aspect-ratio:16/9}.media.square{aspect-ratio:1/1}
.banner{margin:0}.banner figcaption{font:.8rem var(--mono);color:var(--muted);margin-top:.5rem}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(170px,100%),1fr));border:1px solid var(--border);border-radius:var(--r);background:#fff;margin:2rem 0 0}
.stat{padding:1rem 1.2rem;border-right:1px solid var(--border-soft);border-bottom:1px solid var(--border-soft)}
.stat b{display:block;font:700 1.55rem var(--mono);color:var(--accent)}.stat span{font-size:.86rem;color:var(--muted)}
.strip{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(260px,100%),1fr));border:1px solid var(--border);border-radius:var(--r);background:#fff;margin:1.25rem 0}
.strip>div{padding:1rem 1.2rem}.strip>div+div{border-left:4px solid var(--accent)}
.strip .tag{display:block;font:700 .72rem var(--mono);text-transform:uppercase;letter-spacing:.08em;margin-bottom:.3rem}
.strip p{margin:0}
.problem{border:1px solid var(--border);border-radius:var(--r);background:#fff;padding:1.25rem 1.4rem;margin:1.25rem 0}
.problem .tag{font:700 .74rem var(--mono);color:var(--accent);text-transform:uppercase;letter-spacing:.08em}
.callout{border-left:4px solid var(--accent);background:var(--surface);padding:1rem 1.25rem;border-radius:0 var(--r) var(--r) 0;margin:1.25rem 0}
.band-alt .callout{background:#fff}
.quote{font-family:Georgia,"Times New Roman",serif;font-style:italic;font-size:1.15rem}
.source{font-size:.88rem;color:var(--muted);border-top:1px dashed var(--border);padding-top:.7rem;margin-top:1rem}
.source strong{font:700 .72rem var(--mono);text-transform:uppercase;letter-spacing:.08em;color:var(--text)}
details.solution{border:1px solid var(--border);border-radius:var(--r);background:#fff;margin:1rem 0}
details.solution summary{cursor:pointer;padding:.9rem 1.1rem;font:600 .9rem var(--mono);list-style:none;display:flex;justify-content:space-between;gap:1rem}
details.solution summary::-webkit-details-marker{display:none}
details.solution summary::after{content:"+ open";color:var(--accent);font-size:.78rem;white-space:nowrap}
details.solution[open] summary::after{content:"− close"}
details.solution .body{padding:0 1.1rem 1.1rem;border-top:1px solid var(--border-soft)}
details.solution .body>:first-child{margin-top:1rem}
.mono{font-family:var(--mono)}
.table-scroll{overflow-x:auto;margin:1.25rem 0}
table{border-collapse:collapse;width:100%;font-size:.92rem;background:#fff}
th,td{border:1px solid var(--border);padding:.55rem .7rem;text-align:left}
th{background:var(--surface);font:600 .8rem var(--mono)}
caption{caption-side:bottom;font:.8rem var(--mono);color:var(--muted);padding-top:.5rem;text-align:left}
table.square{width:auto;margin:0}
table.square td{width:3.4rem;height:3.4rem;text-align:center;font:700 1.3rem var(--mono)}
table.square td.centre{background:var(--accent-soft);outline:2px solid var(--accent);outline-offset:-4px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:3rem;align-items:start}
.article-body{max-width:70ch}
.article-body h2{margin-top:2.5rem;font-size:clamp(1.4rem,2.6vw,1.85rem)}
.article-body h3{margin-top:1.75rem}
.toc{position:sticky;top:1rem;border:1px solid var(--border);border-radius:var(--r);background:#fff;padding:1.2rem}
.toc ol{margin:0;padding-left:1.2rem;font:.85rem/1.9 var(--mono)}
.toc a{color:var(--text);text-decoration:none}.toc a:hover{color:var(--accent)}
.tool{border:1px solid var(--border);border-radius:var(--r);background:var(--surface);padding:1.25rem;margin:1.25rem 0}
.tool-row{display:flex;flex-wrap:wrap;gap:.6rem;align-items:center}
.tool ol{font-family:var(--mono);font-size:.9rem;margin:.8rem 0 0}
label{display:block;font:600 .8rem var(--mono);margin-bottom:.35rem}
input,select,textarea{width:100%;font:inherit;color:var(--text);background:#fff;border:1px solid var(--border);border-radius:var(--r);padding:.7rem .8rem}
.tool input{width:9rem}
input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid var(--accent);outline-offset:1px;border-color:var(--accent)}
.field{margin-bottom:1rem}
.status{font:.85rem var(--mono);min-height:1.4rem;color:var(--accent-dark)}
.contact-grid{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:2rem;align-items:start}
.faq-list details{margin:.75rem 0}
.site-footer{background:var(--text);color:#e2e8f0;padding:3rem 0 1.5rem;font-size:.92rem}
.site-footer a{color:#fda4af}.site-footer a:hover{color:#fff}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(220px,100%),1fr));gap:2rem}
.footer-h{font:700 .74rem var(--mono);text-transform:uppercase;letter-spacing:.09em;color:#fff;margin-bottom:.8rem}
.footer-brand{font:700 1.1rem var(--mono)}
.site-footer ul{list-style:none;margin:0;padding:0;line-height:2}
.footer-legal{border-top:1px solid #334155;margin-top:2rem;padding-top:1.2rem;font:.78rem var(--mono);color:#cbd5e1}
.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.js .reveal.in{opacity:1;transform:none}
@keyframes drop{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
@media (min-width:1201px){.hero h1{max-width:14ch}}
@media (max-width:1200px) and (min-width:769px){.site-nav ul{gap:.3rem .8rem}.site-nav a{font-size:.74rem}}
@media (max-width:960px){.article-layout,.contact-grid{grid-template-columns:1fr}.toc{position:static}}
@media (max-width:768px){.menu-toggle{display:inline-flex;align-items:center;justify-content:center}.site-nav{position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--border);display:none;z-index:30}.site-nav.open{display:block;animation:drop .3s var(--ease)}.site-nav ul{flex-direction:column;flex-wrap:nowrap;gap:0;padding:.5rem 1.25rem 1rem}.site-nav a{display:block;padding:.8rem 0;border-bottom:1px solid var(--border-soft);font-size:.9rem}.site-nav a::after{display:none}.site-nav a[aria-current=page]{color:var(--accent)}}
@media (max-width:480px){.wrap{padding:0 1rem}.panel{padding:1.1rem}.strip>div+div{border-left:0;border-top:4px solid var(--accent)}table.square td{width:2.8rem;height:2.8rem}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important;scroll-behavior:auto!important}.js .reveal{opacity:1;transform:none}}