/* ============================================================
   TOUGH WELD — design system
   Palette "Weld Amber": charcoal steel + molten-weld amber.
   Signal red appears only in photography, never in UI.
   ============================================================ */

@font-face{
  font-family:'Archivo';font-style:normal;font-weight:500;font-display:swap;
  src:url('../assets/fonts/archivo-500-latin.woff2') format('woff2');
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}
@font-face{
  font-family:'Archivo';font-style:normal;font-weight:500;font-display:swap;
  src:url('../assets/fonts/archivo-500-latin-ext.woff2') format('woff2');
  unicode-range:U+0100-02AF,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF;
}
@font-face{
  font-family:'Archivo';font-style:normal;font-weight:800;font-display:swap;
  src:url('../assets/fonts/archivo-800-latin.woff2') format('woff2');
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}
@font-face{
  font-family:'Archivo';font-style:normal;font-weight:800;font-display:swap;
  src:url('../assets/fonts/archivo-800-latin-ext.woff2') format('woff2');
  unicode-range:U+0100-02AF,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF;
}

:root{
  --bg:#141719;
  --bg-deep:#0E1113;
  --panel:#1D2125;
  --panel-2:#22262B;
  --ink:#F4F3F0;
  --muted:#A6A199;
  --faint:#918D85;
  --line:#2E3338;
  --amber:#F5A623;
  --amber-hot:#FFB300;
  --display:'Archivo','Helvetica Neue',Helvetica,Arial,sans-serif;
  --body:'Helvetica Neue',Helvetica,Arial,sans-serif;
  --mono:ui-monospace,'SF Mono',Menlo,Consolas,'Liberation Mono',monospace;
  --wrap:1120px;
}

*{box-sizing:border-box}
.skip{position:absolute;left:-9999px;top:0;z-index:100;background:var(--amber);color:#141719;padding:10px 18px;font-family:var(--display);font-weight:800;text-transform:uppercase;font-size:.78rem}
.skip:focus{left:0}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--body);font-size:16px;line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--amber)}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{
  outline:2px solid var(--amber);outline-offset:2px;
}

h1,h2,h3,h4{font-family:var(--display);font-weight:800;margin:0;text-wrap:balance}
h1{font-size:clamp(2rem,5.5vw,3.4rem);line-height:1.08;text-transform:uppercase;letter-spacing:.01em}
h2{font-size:clamp(1.4rem,3vw,1.9rem);line-height:1.2;text-transform:uppercase;letter-spacing:.015em}
h3{font-size:1.08rem;line-height:1.35}
p{margin:0 0 1em}
.lead{font-size:1.08rem;max-width:42em;color:var(--muted)}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}

.eyebrow{
  font-family:var(--display);font-weight:500;font-size:.72rem;
  text-transform:uppercase;letter-spacing:.2em;color:var(--amber);
  display:block;margin-bottom:14px;
}

/* ---------- buttons ---------- */
.btn{
  display:inline-block;font-family:var(--display);font-weight:800;
  font-size:.82rem;text-transform:uppercase;letter-spacing:.08em;
  padding:14px 26px;border-radius:3px;text-decoration:none;cursor:pointer;
  border:2px solid var(--amber);transition:background .15s,color .15s,border-color .15s;
}
.btn-solid{background:var(--amber);color:#141719}
.btn-solid:hover{background:var(--amber-hot);border-color:var(--amber-hot)}
.btn-ghost{background:transparent;color:var(--amber)}
.btn-ghost:hover{background:rgba(245,166,35,.12)}
.btn-sm{padding:10px 18px;font-size:.74rem}

/* ---------- header ---------- */
.site-head{
  position:sticky;top:0;z-index:50;
  background:rgba(14,17,19,.92);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.site-head .wrap{
  display:flex;align-items:center;gap:28px;
  padding-top:14px;padding-bottom:14px;
}
.brand{
  display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);
  margin-right:auto;
}
.brand svg{flex:none}
.head-cta{margin-left:2px}
.brand .logo-img{height:25px;width:auto}
.site-foot .brand .logo-img{height:20px}
.nav{display:flex;gap:4px;align-items:center}
.nav a{
  font-family:var(--display);font-weight:500;font-size:.8rem;
  text-transform:uppercase;letter-spacing:.09em;
  color:var(--muted);text-decoration:none;padding:10px 12px;border-radius:3px;
}
.nav a:hover{color:var(--ink)}
.nav a[aria-current="page"]{color:var(--amber)}
.nav-toggle{
  display:none;background:none;border:1px solid var(--line);border-radius:3px;
  color:var(--ink);padding:8px 12px;font-size:1.1rem;line-height:1;cursor:pointer;
}
@media (max-width:1000px){
  .nav-toggle{display:block}
  .nav{
    display:none;position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--bg-deep);border-bottom:1px solid var(--line);
    padding:10px 24px 20px;
  }
  .nav.open{display:flex}
  .nav a{padding:14px 8px;border-bottom:1px solid var(--line)}
}
@media (max-width:560px){
  .site-head .wrap{gap:12px}
  .brand .logo-img{height:17px}
  .head-cta{padding:9px 10px;font-size:.64rem;letter-spacing:.04em}
}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--bg-deep)}
.hero .bg{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  opacity:.42;
}
.hero .scrim{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,17,19,.55) 0%,rgba(14,17,19,.25) 45%,rgba(14,17,19,.92) 100%);
}
.hero .wrap{position:relative;padding-top:110px;padding-bottom:64px}
.hero h1{max-width:13em}
.hero .lead{margin-top:22px;color:#C9C5BD}
.hero .cta-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero.short .wrap{padding-top:84px;padding-bottom:48px}

/* spec strip — the data signature */
.specstrip{
  position:relative;border-top:1px solid var(--line);
  background:rgba(14,17,19,.85);
}
.specstrip .wrap{
  display:flex;flex-wrap:wrap;column-gap:36px;row-gap:4px;
  padding-top:14px;padding-bottom:16px;
  font-family:var(--mono);font-size:.78rem;color:var(--muted);
  font-variant-numeric:tabular-nums;
}
.specstrip b{color:var(--amber);font-weight:600}

/* ---------- sections ---------- */
section{padding:72px 0 8px}
.shead{margin-bottom:34px;max-width:44em}
.shead h2{border-left:4px solid var(--amber);padding-left:18px}
.shead p{margin-top:14px;color:var(--muted)}

/* ---------- grids & cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(260px,100%),1fr));gap:20px}
.card{
  background:var(--panel);border:1px solid var(--line);border-radius:4px;
  overflow:hidden;
}
.card .pad{padding:24px 26px}
.card h3{text-transform:uppercase;letter-spacing:.03em;margin-bottom:10px}
.card p{color:var(--muted);font-size:.95rem}
.card .thumb{aspect-ratio:16/10;object-fit:cover;width:100%;border-bottom:2px solid var(--amber)}
.card .more{
  font-family:var(--display);font-weight:800;font-size:.76rem;
  text-transform:uppercase;letter-spacing:.1em;text-decoration:none;
}
.card .more::after{content:" →"}

/* product spec chip line under card titles */
.chipline{
  font-family:var(--mono);font-size:.74rem;color:var(--amber);
  margin-bottom:12px;letter-spacing:.02em;
}

/* pillar cards */
.pillar{border-top:3px solid var(--amber)}

/* industries */
.ind-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px}
.ind{
  background:var(--panel);border:1px solid var(--line);border-radius:4px;
  padding:18px 18px 16px;
}
.ind .n{font-family:var(--mono);font-size:.7rem;color:var(--faint);display:block;margin-bottom:8px}
.ind h3{font-size:.92rem;text-transform:uppercase;letter-spacing:.04em}
.ind p{font-size:.8rem;color:var(--faint);margin:6px 0 0}

/* ---------- tables ---------- */
.tablebox{overflow-x:auto;border:1px solid var(--line);border-radius:4px;margin:24px 0}
table{border-collapse:collapse;width:100%;min-width:620px;font-size:.9rem}
caption{
  caption-side:top;text-align:left;padding:14px 18px 12px;
  font-family:var(--display);font-weight:800;text-transform:uppercase;
  letter-spacing:.05em;font-size:.8rem;background:var(--panel-2);
  border-bottom:1px solid var(--line);
}
th{
  font-family:var(--display);font-weight:800;font-size:.7rem;
  text-transform:uppercase;letter-spacing:.07em;text-align:left;
  color:var(--muted);background:var(--panel-2);
  padding:12px 18px;border-bottom:2px solid var(--amber);white-space:nowrap;
}
td{
  padding:12px 18px;border-bottom:1px solid var(--line);
  background:var(--panel);vertical-align:top;color:var(--ink);
}
td.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
tr:last-child td{border-bottom:none}
.tnote{font-size:.8rem;color:var(--faint);margin-top:-12px}

/* ---------- figure band (photo + text) ---------- */
.band{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(320px,100%),1fr));gap:32px;align-items:center}
.band img{border-radius:4px;border:1px solid var(--line)}

/* ---------- FAQ ---------- */
.faq details{
  border:1px solid var(--line);border-radius:4px;background:var(--panel);
  margin-bottom:10px;
}
.faq summary{
  cursor:pointer;padding:16px 20px;font-family:var(--display);font-weight:800;
  font-size:.95rem;list-style:none;position:relative;padding-right:48px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  color:var(--amber);font-size:1.3rem;font-weight:500;
}
.faq details[open] summary::after{content:"–"}
.faq .a{padding:0 20px 18px;color:var(--muted);font-size:.95rem}
.faq .a p{margin-bottom:.6em}

/* ---------- contact band ---------- */
.contact-band{
  margin-top:72px;background:var(--bg-deep);
  border-top:3px solid var(--amber);
}
.contact-band section{padding:64px 0 72px}
.contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(300px,100%),1fr));gap:40px}
.contact-list{list-style:none;margin:20px 0 0;padding:0}
.contact-list li{
  display:flex;gap:14px;margin-bottom:14px;align-items:baseline;
  font-size:.98rem;
}
.contact-list .k{
  font-family:var(--display);font-weight:500;font-size:.68rem;
  text-transform:uppercase;letter-spacing:.14em;color:var(--faint);
  min-width:74px;
}
.contact-list a{text-decoration:none}
.contact-list a:hover{text-decoration:underline}

/* ---------- forms ---------- */
form{display:grid;gap:14px}
.frow{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(220px,100%),1fr));gap:14px}
label{
  font-family:var(--display);font-weight:500;font-size:.7rem;
  text-transform:uppercase;letter-spacing:.12em;color:var(--muted);
  display:grid;gap:7px;
}
input,textarea,select{
  background:var(--panel);border:1px solid var(--line);border-radius:3px;
  color:var(--ink);font-family:var(--body);font-size:.95rem;
  padding:12px 14px;width:100%;
  text-transform:none;letter-spacing:normal;
}
input::placeholder,textarea::placeholder{color:var(--faint)}
textarea{min-height:110px;resize:vertical}
.form-note{font-size:.8rem;color:var(--faint);margin:0}

/* ---------- footer ---------- */
.site-foot{border-top:1px solid var(--line);background:var(--bg-deep);margin-top:0}
.site-foot .wrap{padding-top:44px;padding-bottom:40px}
.foot-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:32px}
.site-foot .foot-h{
  font-size:.7rem;text-transform:uppercase;letter-spacing:.14em;
  color:var(--faint);margin-bottom:14px;font-weight:500;
}
.site-foot ul{list-style:none;margin:0;padding:0}
.site-foot li{margin-bottom:9px}
.site-foot a{color:var(--muted);text-decoration:none;font-size:.92rem}
.site-foot a:hover{color:var(--ink)}
.foot-tag{color:var(--muted);font-size:.92rem;margin-top:14px;max-width:26em}
.foot-base{
  display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;
  border-top:1px solid var(--line);margin-top:36px;padding-top:20px;
  font-size:.78rem;color:var(--faint);
}

/* ---------- page hero for subpages ---------- */
.crumb{
  font-family:var(--mono);font-size:.74rem;color:var(--faint);
  margin-bottom:18px;display:block;
}
.crumb a{color:var(--faint);text-decoration:none}
.crumb a:hover{color:var(--amber)}

/* anchor offset under sticky header */
[id]{scroll-margin-top:90px}
.grade{padding-top:56px}
.grade + .grade{border-top:1px solid var(--line)}

/* utility */
.tight{margin-bottom:6px}
.dim{color:var(--muted)}
.center{text-align:center}