/* Old Hand Fault Finder: industrial steel + safety amber. System fonts, no external assets. */
:root{--bg:#0e1318;--s1:#151c23;--s2:#1c252e;--line:#2b3742;--tx:#e8eef3;--mu:#a9b8c6;--amb:#f5a623;--amb2:#ffc85c;--red:#ff8a80;--ok:#7ee2a8;--r:10px;
--f:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--m:ui-monospace,"SF Mono","Cascadia Mono",Consolas,"Liberation Mono",monospace}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--tx);font:16px/1.6 var(--f)}
body::before{content:"";display:block;height:6px;background:repeating-linear-gradient(-45deg,var(--amb) 0 14px,#1a1a1a 14px 28px)}
a{color:var(--amb2);text-underline-offset:3px}a:hover{color:#fff}
:focus-visible{outline:3px solid var(--amb);outline-offset:2px}
.wrap{max-width:1120px;margin:0 auto;padding:0 1rem}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-9999px}.skip:focus{left:1rem;top:1rem;z-index:99;background:var(--amb);color:#111;padding:.6rem 1rem;border-radius:6px}
h1,h2,h3{line-height:1.2;letter-spacing:-.01em;margin:0 0 .6rem}
h1{font-size:clamp(1.9rem,1.2rem + 3vw,3rem);font-weight:800}h2{font-size:1.35rem;font-weight:750}
p{margin:0 0 1rem}
.eyebrow{display:block;font-size:1rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--amb)}
/* header */
.top{background:var(--s1);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:60px}
.brand{display:flex;align-items:center;gap:.6rem;color:var(--tx);text-decoration:none;min-height:44px}
.mark{display:grid;place-items:center;width:40px;height:40px;border-radius:8px;background:var(--amb);color:#111;font:800 1rem var(--m)}
.bname{font-size:1.1rem}.bname b{color:var(--amb)}
.nav{display:flex;gap:.25rem}.nav a{display:inline-flex;align-items:center;min-height:44px;padding:0 .8rem;border-radius:8px;color:var(--tx);text-decoration:none;font-weight:600}
.nav a:hover{background:var(--s2)}
.searchbar{position:sticky;top:0;z-index:20;background:rgba(21,28,35,.97);border-bottom:1px solid var(--line);padding:.6rem 0}
.search{position:relative}
.q{width:100%;min-height:48px;padding:.7rem 1rem .7rem 2.8rem;font:inherit;font-size:1.05rem;color:var(--tx);background:var(--bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' fill='none' stroke='%23f5a623' stroke-width='2.5'%3E%3Ccircle cx='8.5' cy='8.5' r='6'/%3E%3Cpath d='m13 13 5 5'/%3E%3C/svg%3E") no-repeat .9rem 50%;border:2px solid var(--line);border-radius:var(--r)}
.q::placeholder{color:#93a3b3}.q:focus{border-color:var(--amb);outline:none}
.results{list-style:none;margin:.4rem 0 0;padding:0;position:absolute;left:0;right:0;z-index:30;background:var(--s1);border:1px solid var(--line);border-radius:var(--r);max-height:60vh;overflow:auto;box-shadow:0 12px 30px rgba(0,0,0,.5)}
.results:empty{display:none}
.results a{display:flex;gap:.7rem;align-items:center;min-height:48px;padding:.5rem 1rem;color:var(--tx);text-decoration:none;border-bottom:1px solid var(--line)}
.results a:hover,.results a:focus{background:var(--s2)}
.results .cc{font:700 1rem var(--m);color:var(--amb);min-width:5.5rem}
main{padding:1.5rem 1rem 2rem}
/* hero */
.hero{background:linear-gradient(135deg,#1b242d,#121920);border:1px solid var(--line);border-left:6px solid var(--amb);border-radius:14px;padding:1.5rem;margin:0 0 1.5rem}
.lead{font-size:1.15rem;color:var(--tx)}.label{display:block;font-size:1rem;font-weight:700;color:var(--mu);text-transform:uppercase;letter-spacing:.06em}
.search-xl .q{min-height:56px;font-size:1.15rem}
.stats{display:flex;flex-wrap:wrap;gap:.5rem 1.5rem;list-style:none;padding:0;margin:1.2rem 0 0;color:var(--mu)}.stats b{color:var(--tx);font-size:1.3rem;margin-right:.3rem}
.code-hero,.nf-hero{display:flex;gap:1.2rem;align-items:flex-start;flex-wrap:wrap}
.chip{font:800 clamp(2rem,1.4rem + 3vw,3.4rem)/1 var(--m);color:#111;background:var(--amb);padding:.9rem 1.1rem;border-radius:12px;min-width:6rem;text-align:center;box-shadow:inset 0 -6px 0 rgba(0,0,0,.18)}
.hero-txt{flex:1 1 280px}
.badge{display:inline-block;margin:.2rem 0 1rem;padding:.25rem .7rem;border:1px solid var(--line);border-radius:999px;color:var(--mu)}.badge.ok{color:var(--ok);border-color:#2f6b4a;background:#13261c}
.crumbs{display:flex;flex-wrap:wrap;gap:.4rem;align-items:center;margin:0 0 1rem;color:var(--mu)}.crumbs a{display:inline-flex;align-items:center;min-height:44px}
/* cards */
.grid2{display:grid;gap:1rem;margin:0 0 1rem}@media(min-width:760px){.grid2{grid-template-columns:1fr 1fr}}
.card{background:var(--s1);border:1px solid var(--line);border-radius:var(--r);padding:1.2rem}
.card h2{font-size:1.15rem;text-transform:uppercase;letter-spacing:.06em;color:var(--amb)}
.causes,.steps{margin:0;padding-left:1.3rem}.causes li,.steps li{margin:.35rem 0}
.steps{list-style:none;padding:0;counter-reset:s}.steps li{counter-increment:s;display:flex;gap:.7rem;align-items:flex-start}
.steps li::before{content:counter(s);flex:0 0 2rem;height:2rem;display:grid;place-items:center;border-radius:50%;background:var(--s2);border:1px solid var(--amb);color:var(--amb);font:700 1rem var(--m)}
.tip{border-left:6px solid var(--amb);margin:0 0 1rem}
.ok{background:#13261c;border:1px solid #2f6b4a;border-radius:var(--r);padding:.8rem 1rem;margin:0 0 1rem;color:var(--tx)}.ok a{color:var(--ok)}
/* safety */
.safety{display:grid;gap:.75rem;margin:1rem 0}
.warn,.loto{display:flex;gap:.8rem;align-items:flex-start;border-radius:var(--r);padding:1rem;background:#241d0e;border:1px solid #6b5216}
.loto{background:#2a1416;border-color:#7a2b31}.warn p,.loto p{margin:0}
.tag{flex:0 0 auto;font:800 1rem var(--m);text-transform:uppercase;background:var(--amb);color:#111;padding:.15rem .5rem;border-radius:4px}.tag-red{background:#ff8a80}
.cite{background:var(--s2);border:1px dashed var(--line);border-radius:var(--r);padding:1rem 1.2rem;margin:1rem 0}.cite h2{font-size:1rem;text-transform:uppercase;letter-spacing:.08em;color:var(--mu)}
.src{color:var(--mu);margin:0}.src a{font-weight:700}
/* grids */
.section{margin:2rem 0}
.brandgrid,.codegrid{list-style:none;padding:0;margin:0;display:grid;gap:.75rem;grid-template-columns:repeat(auto-fill,minmax(230px,1fr))}
.brandcard,.codecard{display:flex;flex-direction:column;gap:.2rem;min-height:56px;padding:1rem;background:var(--s1);border:1px solid var(--line);border-radius:var(--r);color:var(--tx);text-decoration:none;transition:border-color .15s,transform .15s}
.brandcard:hover,.codecard:hover{border-color:var(--amb);transform:translateY(-2px)}
.bc-name{font-size:1.35rem;font-weight:800}.bc-n{color:var(--amb2);font-weight:600}
.cc{font:800 1.2rem var(--m);color:var(--amb)}.cn{color:var(--tx)}.ck{color:var(--ok);font-size:1rem}
.group{margin:2rem 0}.group h2{display:flex;flex-wrap:wrap;align-items:baseline;gap:.2rem .7rem;border-bottom:1px solid var(--line);padding-bottom:.5rem}.group h2 .eyebrow{width:100%}
.count{font-size:1rem;color:var(--mu);font-weight:600}
.pagehead{margin:0 0 1rem}.jump{display:flex;flex-wrap:wrap;gap:.5rem}.jump a{display:inline-flex;align-items:center;min-height:44px;padding:0 1rem;border:1px solid var(--line);border-radius:999px;color:var(--tx);text-decoration:none}.jump a:hover{border-color:var(--amb)}
.soon{background:var(--s2);border:1px solid var(--line);border-left:6px solid var(--amb);border-radius:var(--r);padding:1rem}
.kitpromo{background:var(--s1);border:1px solid var(--line);border-radius:14px;padding:1.5rem}
.prose{max-width:72ch}.prose h2{margin-top:1.6rem;color:var(--amb)}.prose li{margin:.3rem 0}
/* footer */
.foot{border-top:1px solid var(--line);background:var(--s1);color:var(--mu);padding:1.5rem 0 2rem;margin-top:2rem}.foot p{margin:.3rem 0}
.fbrand{color:var(--tx);font-weight:800}.flinks a{display:inline-flex;align-items:center;min-height:44px;min-width:44px;padding:0 .25rem}
@media (max-width:719px){.searchbar{position:sticky;top:0}.nav a{padding:0 .55rem}.bname{font-size:1rem}.hero{padding:1.1rem}}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}
.results .none{padding:.8rem 1rem;color:var(--mu)}
.skip{display:inline-flex;align-items:center;min-height:44px;padding:0 1rem}.ok a{display:inline-flex;align-items:center;min-height:44px}
.nav a,.bname{white-space:nowrap}
@media (max-width:480px){.bname{font-size:1rem}.bname b{display:block;line-height:1.1}.brand{gap:.45rem}.mark{width:36px;height:36px}.nav{gap:0}.nav a{padding:0 .45rem;font-size:1rem}}
.ok a{display:inline-block;padding:.7rem 0;line-height:1.3}