/* Public site layout */
.skip:focus{position:fixed;left:12px;top:12px;width:auto;height:auto;clip:auto;background:var(--surface);padding:8px 12px;z-index:20}
header.site{background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:env(safe-area-inset-top,0px);z-index:10}
header.site .bar{display:flex;align-items:center;gap:18px;padding-block:12px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.brand .word{font-family:var(--f-display);font-weight:800;font-size:24px;letter-spacing:.01em}
.nav{display:flex;gap:4px;flex:1;flex-wrap:wrap}
.nav a{text-decoration:none;color:var(--muted);font-weight:600;font-size:14.5px;padding:6px 10px;border-radius:7px}
.nav a[aria-current="page"]{color:var(--ink);background:var(--sunk)}
.nav a:hover{color:var(--ink)}
@media (max-width:640px){.nav{order:3;flex-basis:100%;overflow-x:auto;flex-wrap:nowrap;scrollbar-width:none;-webkit-mask-image:linear-gradient(to right,#000 82%,transparent);mask-image:linear-gradient(to right,#000 82%,transparent);padding-right:24px}.nav::-webkit-scrollbar{display:none}.nav a{white-space:nowrap}}
/* touch screens: small buttons and inline source links get a finger-sized target */
@media (hover:none) and (pointer:coarse){.btn.sm{min-height:40px;padding-inline:14px}.timeline a{display:inline-block;padding-block:10px}}
main{display:block;padding-block:28px 56px;outline:none}
.hero{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:24px;align-items:start}
@media (max-width:920px){.hero{grid-template-columns:minmax(0,1fr)}}
.hero h1{font-size:clamp(28px,4vw,42px);font-weight:800;letter-spacing:-.005em}
.hero .lede{font-size:17px;color:var(--muted);max-width:52ch;margin-top:10px}
.checker{margin-top:20px;box-shadow:var(--shadow)}
.drop{border:1.5px dashed var(--line-strong);border-radius:8px;padding:12px;display:flex;flex-wrap:wrap;gap:10px;align-items:center;background:var(--sunk)}
.drop.over{border-color:var(--accent);background:var(--accent-soft)}
.thumbs{display:flex;gap:8px;flex-wrap:wrap}
.thumb{position:relative;width:68px;height:68px;border-radius:6px;overflow:hidden;border:1px solid var(--line)}
.thumb img{width:100%;height:100%;object-fit:cover;display:block}
.thumb button{position:absolute;top:3px;right:3px;border:0;border-radius:50%;width:22px;height:22px;padding:0;background:var(--surface);cursor:pointer;font-size:14px;line-height:22px}
.counter{font-family:var(--f-mono);font-size:12px;color:var(--muted);text-align:right}
.result-slot{min-width:0;scroll-margin-top:130px}
.placeholder{border:1px dashed var(--line-strong);border-radius:var(--r);padding:22px;color:var(--muted);display:flex;flex-direction:column;gap:14px;background:transparent}
.placeholder ol{margin:0;padding-left:20px;display:flex;flex-direction:column;gap:8px}
.placeholder .demo{display:grid;grid-template-columns:auto 1fr;gap:6px 14px;align-items:baseline;background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:12px 14px}
.placeholder .demo .big{font-family:var(--f-mono);font-size:26px;color:var(--high)}
.thinking{display:flex;gap:12px;align-items:center;padding:22px;border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}
section.block{margin-top:56px}
section.block > h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:14px}
section.block > .lede{color:var(--muted);max-width:68ch;margin-bottom:18px}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;counter-reset:s}
.steps .card{position:relative;padding-top:44px}
.steps .card::before{counter-increment:s;content:counter(s);position:absolute;top:14px;left:20px;font-family:var(--f-mono);font-size:13px;color:var(--accent);border:1px solid var(--accent);border-radius:999px;width:24px;height:24px;display:grid;place-items:center}
.steps h3{font-size:17px;margin-bottom:6px}
.timeline{list-style:none;margin:0;padding:0;border-left:2px solid var(--line-strong);display:flex;flex-direction:column;gap:18px}
.timeline li{position:relative;padding-left:22px}
.timeline li::before{content:"";position:absolute;left:-7px;top:6px;width:12px;height:12px;border-radius:50%;background:var(--surface);border:2px solid var(--muted)}
.timeline li.key::before{border-color:var(--high);background:var(--high)}
.timeline .when{font-family:var(--f-mono);font-size:13px;color:var(--muted)}
.timeline .what{font-weight:600}
.bot{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px;align-items:center;background:var(--accent);color:var(--accent-ink);border-radius:var(--r);padding:22px 24px}
.bot h2{font-size:22px}
.bot .btn{background:var(--accent-ink);color:var(--accent);border-color:var(--accent-ink)}
@media (max-width:640px){.bot{grid-template-columns:1fr}}
.prose{max-width:72ch;display:flex;flex-direction:column;gap:14px}
.prose h1{font-size:clamp(26px,3.4vw,36px)}
.prose h2{font-size:21px;margin-top:12px}
.prose ul{margin:0;padding-left:22px;display:flex;flex-direction:column;gap:6px}
.wlist{display:flex;flex-direction:column;gap:12px}
.witem{display:grid;grid-template-columns:6px minmax(0,1fr);gap:14px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px}
.witem .bar{background:var(--match);border-radius:3px}
.site-foot{border-top:1px solid var(--line);background:var(--surface);padding-block:24px calc(24px + env(safe-area-inset-bottom,0px))}
.site-foot .cols{display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;align-items:flex-start}
.site-foot a{color:var(--muted);text-decoration:none;font-size:14px}
.site-foot a:hover{color:var(--ink)}
#cf-turnstile{min-height:0}