/* ============================================================
   EGR DELETE KIT — industrial / machinist-blueprint system
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Archivo:wght@500;600;700;800;900&family=IBM+Plex+Mono:wght@400;500;600&family=IBM+Plex+Sans:wght@400;500;600&display=swap');

:root{
  --bg:#0b0d10;
  --bg-2:#0f1216;
  --surface:#14181e;
  --surface-2:#1a1f27;
  --line:#262d37;
  --line-bright:#39424e;
  --text:#eceef1;
  --dim:#99a1ab;
  --faint:#5c6470;
  --accent:#ff5a1f;        /* molten exhaust orange */
  --accent-2:#ffb43d;      /* heat-treated amber     */
  --live:#36d399;          /* available now          */
  --heat:linear-gradient(100deg,#ff7a18 0%,#ff4d1c 45%,#d61f3a 100%);
  --maxw:1180px;
  --ease:cubic-bezier(.2,.7,.2,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  font-family:'IBM Plex Sans',system-ui,sans-serif;
  font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  position:relative;
}

/* blueprint grid + heat-glow + grain atmosphere */
body::before{
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(900px 500px at 82% -8%, rgba(255,90,31,.10), transparent 60%),
    radial-gradient(700px 600px at -10% 110%, rgba(255,180,61,.05), transparent 60%),
    linear-gradient(180deg,#0c0f13,#0b0d10 60%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.5;
  background-image:
    linear-gradient(rgba(255,255,255,.022) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.022) 1px,transparent 1px);
  background-size:54px 54px;
  -webkit-mask-image:radial-gradient(120% 100% at 50% 0%,#000 55%,transparent 100%);
          mask-image:radial-gradient(120% 100% at 50% 0%,#000 55%,transparent 100%);
}

/* ---- shared atoms ---- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.mono{font-family:'IBM Plex Mono',monospace}
.eyebrow{
  font-family:'IBM Plex Mono',monospace;font-size:.72rem;letter-spacing:.22em;
  text-transform:uppercase;color:var(--accent);
}
.eyebrow::before{content:"// ";color:var(--faint)}
a{color:inherit;text-decoration:none}

h1,h2,h3{font-family:'Archivo',sans-serif;font-weight:800;line-height:1.02;letter-spacing:-.01em}

.tag{
  display:inline-flex;align-items:center;gap:.5em;
  font-family:'IBM Plex Mono',monospace;font-size:.7rem;letter-spacing:.14em;
  text-transform:uppercase;padding:.4em .7em;border:1px solid var(--line-bright);
  border-radius:2px;color:var(--dim);background:rgba(255,255,255,.015)
}
.dot{width:7px;height:7px;border-radius:50%;flex:none}
.dot.live{background:var(--live);box-shadow:0 0 0 0 rgba(54,211,153,.6);animation:pulse 2.4s infinite}
.dot.dev{background:var(--accent-2);box-shadow:0 0 8px rgba(255,180,61,.7)}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(54,211,153,.55)}70%{box-shadow:0 0 0 7px rgba(54,211,153,0)}100%{box-shadow:0 0 0 0 rgba(54,211,153,0)}}

.btn{
  display:inline-flex;align-items:center;gap:.6em;cursor:pointer;
  font-family:'IBM Plex Mono',monospace;font-size:.82rem;letter-spacing:.06em;
  padding:.85em 1.3em;border-radius:3px;transition:.25s var(--ease);
  border:1px solid var(--line-bright);color:var(--text);background:var(--surface-2)
}
.btn:hover{border-color:var(--accent);color:#fff;transform:translateY(-1px)}
.btn .arrow{transition:transform .25s var(--ease)}
.btn:hover .arrow{transform:translate(3px,-3px)}
.btn--heat{background-image:var(--heat);border:none;color:#fff;font-weight:600;box-shadow:0 8px 30px -10px rgba(255,77,28,.6)}
.btn--heat:hover{box-shadow:0 12px 34px -8px rgba(255,77,28,.75)}

/* corner registration marks */
.reg{position:fixed;width:14px;height:14px;border:1px solid var(--line-bright);z-index:5;opacity:.5;pointer-events:none}
.reg.tl{top:16px;left:16px;border-right:0;border-bottom:0}
.reg.tr{top:16px;right:16px;border-left:0;border-bottom:0}
.reg.bl{bottom:16px;left:16px;border-right:0;border-top:0}
.reg.br{bottom:16px;right:16px;border-left:0;border-top:0}

/* ---- header ---- */
header.site{
  position:sticky;top:0;z-index:20;backdrop-filter:blur(10px);
  background:rgba(11,13,16,.72);border-bottom:1px solid var(--line)
}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:.7em;font-family:'Archivo';font-weight:900;letter-spacing:.02em}
.brand .mark{
  width:30px;height:30px;flex:none;border-radius:4px;background-image:var(--heat);
  display:grid;place-items:center;color:#fff;font-size:.7rem;font-family:'IBM Plex Mono';
  font-weight:600;box-shadow:0 0 18px -4px rgba(255,90,31,.7);position:relative;overflow:hidden
}
.brand .mark::after{content:"";position:absolute;inset:0;background:repeating-linear-gradient(135deg,rgba(0,0,0,.18) 0 2px,transparent 2px 5px)}
.brand b{font-size:1.02rem}
.brand span{color:var(--faint);font-family:'IBM Plex Mono';font-size:.62rem;letter-spacing:.2em;display:block;margin-top:-3px}
.navlinks{display:flex;gap:1.6rem;align-items:center;font-family:'IBM Plex Mono';font-size:.8rem}
.navlinks a{color:var(--dim);transition:.2s}.navlinks a:hover{color:var(--accent)}
@media(max-width:680px){.navlinks a.hideable{display:none}}

/* ---- hero ---- */
.hero{padding:96px 0 60px;position:relative}
.hero h1{font-size:clamp(2.7rem,7vw,5.4rem);margin:.35em 0 .4em}
.hero h1 .hl{background-image:var(--heat);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{max-width:620px;color:var(--dim);font-size:1.08rem}
.hero .meta{display:flex;flex-wrap:wrap;gap:.6rem;margin-top:28px}

/* ---- catalog ---- */
.section-head{display:flex;align-items:end;justify-content:space-between;gap:1rem;margin:0 0 26px;border-bottom:1px solid var(--line);padding-bottom:14px}
.section-head h2{font-size:clamp(1.4rem,3vw,2rem)}
.catalog{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;padding-bottom:40px}
@media(max-width:900px){.catalog{grid-template-columns:1fr}}

.card{
  position:relative;display:flex;flex-direction:column;
  background:linear-gradient(180deg,var(--surface),var(--bg-2));
  border:1px solid var(--line);border-radius:8px;padding:24px 22px 22px;overflow:hidden;
  transition:.3s var(--ease);min-height:300px
}
.card::before{content:"";position:absolute;inset:0 0 auto 0;height:3px;background:var(--line-bright);transition:.3s}
.card:hover{transform:translateY(-4px);border-color:var(--line-bright);box-shadow:0 24px 50px -24px rgba(0,0,0,.8)}
.card.is-live:hover::before{background:var(--live)}
.card.is-dev:hover::before{background-image:var(--heat)}
.card:hover{box-shadow:0 24px 60px -28px rgba(255,90,31,.4)}
.card .pn{font-family:'IBM Plex Mono';font-size:.66rem;letter-spacing:.16em;color:var(--faint)}
.card .code{font-family:'Archivo';font-weight:900;font-size:2.5rem;letter-spacing:-.02em;margin:.25em 0 .05em;line-height:1}
.card .disp{font-family:'IBM Plex Mono';font-size:.8rem;color:var(--accent-2);letter-spacing:.04em}
.card .apps{color:var(--dim);font-size:.92rem;margin:16px 0 0;flex:1}
.card .foot{display:flex;flex-direction:column;gap:14px;margin-top:22px;padding-top:16px;border-top:1px solid var(--line)}
.card .status{display:inline-flex;align-items:center;gap:.5em;font-family:'IBM Plex Mono';font-size:.68rem;letter-spacing:.12em;text-transform:uppercase}
.card .status.live{color:var(--live)} .card .status.dev{color:var(--accent-2)}
.card .go{font-family:'IBM Plex Mono';font-size:.8rem;color:var(--dim);transition:.2s;align-self:flex-end}
.card:hover .go{color:var(--accent)}
.card .watermark{position:absolute;right:-10px;bottom:-26px;font-family:'Archivo';font-weight:900;font-size:7rem;color:rgba(255,255,255,.02);pointer-events:none;letter-spacing:-.04em}

/* ---- generic band / why ---- */
.band{border-top:1px solid var(--line);padding:60px 0}
.feat{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:30px}
@media(max-width:820px){.feat{grid-template-columns:1fr}}
.feat .item{border:1px solid var(--line);border-radius:6px;padding:22px;background:var(--surface)}
.feat .item .n{font-family:'IBM Plex Mono';color:var(--accent);font-size:.8rem;letter-spacing:.12em}
.feat .item h3{font-size:1.12rem;margin:.5em 0 .3em}
.feat .item p{color:var(--dim);font-size:.92rem}

/* ---- info page ---- */
.status-banner{
  border:1px solid var(--line-bright);border-left:3px solid var(--accent-2);
  background:linear-gradient(90deg,rgba(255,180,61,.07),transparent);
  border-radius:5px;padding:18px 22px;margin:8px 0 8px;display:flex;gap:16px;align-items:flex-start
}
.status-banner .t{font-family:'IBM Plex Mono';font-size:.7rem;letter-spacing:.14em;color:var(--accent-2);text-transform:uppercase}
.status-banner p{color:var(--dim);font-size:.94rem;margin-top:4px}

.doc{display:grid;grid-template-columns:1fr;gap:0;padding:20px 0 40px}
.block{padding:34px 0;border-top:1px solid var(--line)}
.block:first-child{border-top:0}
.block h2{font-size:clamp(1.5rem,3.4vw,2.1rem);margin-bottom:8px}
.block h2 .ix{font-family:'IBM Plex Mono';font-size:.85rem;color:var(--faint);margin-right:.7em;font-weight:400;letter-spacing:.1em}
.block p{color:var(--dim);max-width:760px;margin-top:12px}
.block p strong{color:var(--text);font-weight:600}

/* spec table */
.spec{width:100%;border-collapse:collapse;margin-top:20px;font-size:.92rem}
.spec td{padding:11px 4px;border-bottom:1px solid var(--line);vertical-align:top}
.spec td:first-child{font-family:'IBM Plex Mono';color:var(--accent-2);width:38%;font-size:.82rem;letter-spacing:.02em}
.spec td:last-child{color:var(--text)}
@media(max-width:560px){.spec td:first-child{width:46%}}

/* bom list */
.bom{list-style:none;margin-top:18px;display:grid;gap:10px}
.bom li{display:flex;gap:14px;align-items:flex-start;padding:14px 16px;border:1px solid var(--line);border-radius:5px;background:var(--surface)}
.bom li .ic{font-family:'IBM Plex Mono';color:var(--accent);font-size:.8rem;flex:none;margin-top:1px}
.bom li b{display:block;font-weight:600}
.bom li span{color:var(--dim);font-size:.9rem}
.bom li.req{border-color:var(--line-bright);border-left:3px solid var(--accent-2)}

.callout{border:1px solid var(--line-bright);border-radius:6px;padding:20px 22px;margin-top:22px;background:var(--surface);color:var(--dim);font-size:.92rem}
.callout b{color:var(--text)}

.notify{border:1px solid var(--line);border-radius:8px;padding:30px;margin-top:14px;background:linear-gradient(180deg,var(--surface),var(--bg-2));text-align:center}
.notify h3{font-size:1.5rem;margin-bottom:8px}
.notify p{color:var(--dim);max-width:520px;margin:0 auto 22px}
.notify .row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* footer */
footer.site{border-top:1px solid var(--line);padding:40px 0;margin-top:30px;color:var(--faint)}
footer.site .wrap{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;font-family:'IBM Plex Mono';font-size:.78rem}
footer.site a{color:var(--dim)}footer.site a:hover{color:var(--accent)}
.disclaimer{font-size:.74rem;color:var(--faint);max-width:760px;margin-top:14px;line-height:1.7}

.backlink{font-family:'IBM Plex Mono';font-size:.8rem;color:var(--dim);display:inline-flex;gap:.5em;margin:24px 0 0}
.backlink:hover{color:var(--accent)}

/* page-load reveal */
.rv{opacity:0;transform:translateY(14px);animation:rise .7s var(--ease) forwards}
@keyframes rise{to{opacity:1;transform:none}}
.d1{animation-delay:.05s}.d2{animation-delay:.13s}.d3{animation-delay:.21s}.d4{animation-delay:.29s}.d5{animation-delay:.37s}
@media(prefers-reduced-motion:reduce){.rv{animation:none;opacity:1;transform:none}.dot.live{animation:none}}