/* ============================================================
   Goldcattle — Custom 3D Printed Nylon Gear Sets
   Independent stylesheet · namespace .gcg-
   Theme: graphite + engineering orange, mechanism-focused
   ============================================================ */
:root{
  --gcg-ink:#1c2330;
  --gcg-ink-soft:#4a5568;
  --gcg-graphite:#2b3340;
  --gcg-graphite-dk:#151b26;
  --gcg-orange:#e8590c;
  --gcg-orange-lt:#ffb78a;
  --gcg-bg:#f4f6f8;
  --gcg-card:#ffffff;
  --gcg-line:#dfe5ec;
  --gcg-line-soft:#eaf0f4;
  --gcg-blue:#0052cc;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--gcg-bg);color:var(--gcg-ink);font-family:"Segoe UI",system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--gcg-orange);text-decoration:none}
a:hover{text-decoration:underline}
b,strong{font-weight:700}
.gcg-page{overflow:hidden}

/* ---------- layout ---------- */
.gcg-wrap{max-width:1240px;margin:0 auto;padding:0 24px}
.gcg-section{padding:72px 0}
.gcg-section--soft{background:#fff}
.gcg-kicker{display:inline-block;font-size:12px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:var(--gcg-orange);margin-bottom:10px}
.gcg-section h2{font-size:clamp(26px,3.2vw,38px);line-height:1.2;letter-spacing:-.01em;color:var(--gcg-ink);margin-bottom:14px}
.gcg-lede{font-size:17px;color:var(--gcg-ink-soft);max-width:900px;margin-bottom:30px}
.gcg-fine{font-size:13px;color:#6b7a8c;margin-top:14px}
.gcg-note{font-size:13px;color:#7a8798;text-align:center;margin-top:26px}

/* ---------- hero ---------- */
.gcg-hero{position:relative;background:linear-gradient(150deg,#141a24 0%,#232c3b 55%,#3a3f4d 130%);color:#eef2f6;overflow:hidden}
.gcg-hero::before{content:"";position:absolute;inset:0;background:
  repeating-linear-gradient(0deg,rgba(255,255,255,.04) 0 1px,transparent 1px 34px),
  repeating-linear-gradient(90deg,rgba(255,255,255,.04) 0 1px,transparent 1px 34px);pointer-events:none}
.gcg-hero::after{content:"";position:absolute;right:-160px;bottom:-160px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(232,89,12,.22),transparent 65%);pointer-events:none}
.gcg-hero .gcg-wrap{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;padding-top:76px;padding-bottom:76px}
.gcg-hero-tag{display:inline-block;font-size:12px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:#ffb78a;border:1px solid rgba(255,183,138,.4);border-radius:999px;padding:6px 14px;margin-bottom:20px;background:rgba(232,89,12,.08)}
.gcg-hero-title{font-size:clamp(30px,4vw,50px);line-height:1.12;letter-spacing:-.015em;color:#fff;margin-bottom:16px}
.gcg-hero-sub{font-size:17px;color:#c3ccd8;max-width:560px;margin-bottom:26px}
.gcg-hero-specs{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:26px;max-width:560px}
.gcg-hero-specs div{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:10px;padding:10px 14px;font-size:13.5px;color:#d8dfe8}
.gcg-hero-specs b{display:block;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:#ffb78a;margin-bottom:2px}
.gcg-cta{display:inline-block;font-size:15px}
.gcg-cta--ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.75)!important}
.gcg-hero-meta{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:28px;font-size:13px;color:#aab6c4}
.gcg-hero-meta b{color:#fff}
.gcg-hero-visual{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);border-radius:16px;padding:18px}
.gcg-hero-visual svg{width:100%;height:auto}
.gcg-hero-visual figcaption{font-size:12.5px;color:#9fabb9;margin-top:10px;line-height:1.5}
.gcg-hero-strip{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin-top:14px}
.gcg-hero-strip div{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:10px;padding:9px 13px;font-size:12.5px;color:#d3dae4}
.gcg-hero-strip b{display:block;font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:#ffb78a}

/* ---------- overview ---------- */
.gcg-overview{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.gcg-overview-card{background:var(--gcg-card);border:1px solid var(--gcg-line);border-radius:14px;padding:26px}
.gcg-overview-card h4{font-size:17px;margin-bottom:10px;color:var(--gcg-graphite-dk)}
.gcg-overview-card p{font-size:14.5px;color:var(--gcg-ink-soft)}
.gcg-overview-card--key{border-top:3px solid var(--gcg-orange)}

/* ---------- tables ---------- */
.gcg-table-wrap{background:#fff;border:1px solid var(--gcg-line);border-radius:14px;overflow:hidden;overflow-x:auto}
.gcg-table-wrap table{width:100%;border-collapse:collapse;min-width:640px}
.gcg-table-wrap th{background:var(--gcg-graphite);color:#fff;text-align:left;padding:12px 18px;font-size:13px;letter-spacing:.04em}
.gcg-table-wrap td{padding:11px 18px;border-bottom:1px solid var(--gcg-line-soft);font-size:14px;vertical-align:top;color:var(--gcg-ink)}
.gcg-table-wrap tr:last-child td{border-bottom:none}
.gcg-table-wrap td:first-child{font-weight:700;color:var(--gcg-graphite-dk);white-space:nowrap}
.gcg-table-wrap tbody tr:nth-child(even){background:#f8fafc}

/* ---------- cards / grids ---------- */
.gcg-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.gcg-grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.gcg-card{background:#fff;border:1px solid var(--gcg-line);border-radius:14px;padding:24px}
.gcg-card h4{font-size:16px;color:var(--gcg-graphite-dk);margin-bottom:8px}
.gcg-card p{font-size:14px;color:var(--gcg-ink-soft)}
.gcg-card--warn{border-top:3px solid var(--gcg-orange)}
.gcg-card ul{list-style:none;margin-top:8px}
.gcg-card li{font-size:13.5px;color:var(--gcg-ink-soft);padding:4px 0 4px 20px;position:relative}
.gcg-card li::before{content:"›";position:absolute;left:4px;color:var(--gcg-orange);font-weight:700}

/* ---------- callout ---------- */
.gcg-callout{background:#fdf1e9;border:1px solid #f6d9c2;border-left:4px solid var(--gcg-orange);border-radius:10px;padding:18px 22px;font-size:14.5px;color:var(--gcg-ink);margin-top:24px}
.gcg-callout b{color:var(--gcg-graphite-dk)}
.gcg-callout--cool{background:#eef3f7;border-color:#d5e0e9;border-left-color:var(--gcg-graphite)}

/* ---------- process flow ---------- */
.gcg-flow{display:flex;flex-wrap:wrap;gap:10px;align-items:stretch;margin:26px 0}
.gcg-flow-step{flex:1 1 120px;background:#fff;border:1px solid var(--gcg-line);border-radius:10px;padding:14px 16px;font-size:13.5px;font-weight:700;color:var(--gcg-graphite-dk);text-align:center;position:relative}
.gcg-flow-step small{display:block;font-weight:400;color:var(--gcg-ink-soft);font-size:12px;margin-top:4px}
.gcg-flow-step--key{background:var(--gcg-orange);color:#fff;border-color:var(--gcg-orange)}
.gcg-flow-step--key small{color:#ffe6d4}
.gcg-flow-arrow{align-self:center;color:var(--gcg-orange);font-size:18px;font-weight:800}

/* ---------- applications ---------- */
.gcg-app{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.gcg-app-card{background:#fff;border:1px solid var(--gcg-line);border-radius:14px;padding:24px}
.gcg-app-card h4{font-size:16px;color:var(--gcg-graphite-dk);margin-bottom:8px}
.gcg-app-card p{font-size:14px;color:var(--gcg-ink-soft);margin-bottom:8px}
.gcg-app-card small{font-size:12.5px;color:var(--gcg-orange);font-weight:700}

/* ---------- decision tree ---------- */
.gcg-decision{background:linear-gradient(150deg,#141a24,#232c3b);border-radius:16px;padding:30px;margin-top:26px;color:#eef2f6}
.gcg-decision-title{font-size:18px;font-weight:800;margin-bottom:18px;color:#fff}
.gcg-decision-node{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:10px;padding:13px 18px;font-size:14px;margin-bottom:8px}
.gcg-decision-node b{color:#ffb78a}
.gcg-decision-arrow{color:#e8590c;font-size:16px;text-align:center;margin:-2px 0 4px;font-weight:800}

/* ---------- QC / failure ---------- */
.gcg-qc-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.gcg-qc-item{background:#fff;border:1px solid var(--gcg-line);border-radius:10px;padding:14px 18px;display:flex;gap:14px;align-items:baseline}
.gcg-qc-item b{color:var(--gcg-graphite-dk);white-space:nowrap;font-size:14px;min-width:110px}
.gcg-qc-item span{font-size:13.5px;color:var(--gcg-ink-soft)}

/* ---------- case study ---------- */
.gcg-case{background:#fff;border:1px solid var(--gcg-line);border-radius:16px;overflow:hidden}
.gcg-case-head{background:var(--gcg-graphite);color:#fff;font-weight:800;padding:14px 22px;font-size:15px}
.gcg-case-grid{display:grid;grid-template-columns:1fr 1fr;gap:0}
.gcg-case-cell{padding:22px}
.gcg-case-cell:first-child{border-right:1px solid var(--gcg-line-soft)}
.gcg-case-cell table{width:100%;border-collapse:collapse}
.gcg-case-cell td{padding:7px 0;border-bottom:1px solid var(--gcg-line-soft);font-size:13.5px;vertical-align:top}
.gcg-case-cell td:first-child{font-weight:700;color:var(--gcg-graphite-dk);width:40%}
.gcg-case-cell tr:last-child td{border-bottom:none}
.gcg-case-cell p{font-size:13.5px;color:var(--gcg-ink-soft);margin-top:8px}

/* ---------- RFQ ---------- */
.gcg-rfq{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}
.gcg-rfq-list{background:#fff;border:1px solid var(--gcg-line);border-radius:14px;padding:26px}
.gcg-rfq-list ol{list-style:none;counter-reset:r}
.gcg-rfq-list li{counter-increment:r;font-size:14px;font-weight:700;color:var(--gcg-ink);padding:9px 0 9px 40px;position:relative;border-bottom:1px dashed var(--gcg-line-soft)}
.gcg-rfq-list li:last-child{border-bottom:none}
.gcg-rfq-list li::before{content:counter(r);position:absolute;left:0;top:10px;width:26px;height:26px;background:#fdf1e9;border:1px solid #f6d9c2;color:var(--gcg-orange);border-radius:50%;font-size:13px;font-weight:800;display:flex;align-items:center;justify-content:center}
.gcg-rfq-list small{display:block;font-weight:400;color:var(--gcg-ink-soft);font-size:12.5px}
.gcg-rfq-note{background:linear-gradient(160deg,#141a24,#232c3b);border-radius:14px;padding:26px;color:#eef2f6}
.gcg-rfq-note b{color:#fff;font-size:15px}
.gcg-rfq-note p{font-size:13.5px;color:#c3ccd8;margin-top:10px;padding-left:14px;position:relative}
.gcg-rfq-note p::before{content:"✓";position:absolute;left:0;color:#ffb78a;font-weight:800}

/* ---------- FAQ ---------- */
.gcg-faq{max-width:100%}
.gcg-faq details{background:#fff;border:1px solid var(--gcg-line);border-radius:12px;margin-bottom:10px;overflow:hidden}
.gcg-faq summary{cursor:pointer;padding:16px 20px;font-weight:700;font-size:15px;color:var(--gcg-ink);list-style:none;position:relative;padding-right:44px}
.gcg-faq summary::-webkit-details-marker{display:none}
.gcg-faq summary::after{content:"+";position:absolute;right:18px;top:12px;font-size:22px;color:var(--gcg-orange);font-weight:400;transition:transform .2s}
.gcg-faq details[open] summary::after{transform:rotate(45deg)}
.gcg-faq .gcg-answer{padding:0 20px 18px;border-top:1px solid var(--gcg-line-soft)}
.gcg-faq .gcg-answer p{font-size:14px;color:var(--gcg-ink-soft);padding-top:14px}

/* ---------- related ---------- */
.gcg-rel{display:flex;flex-wrap:wrap;gap:10px}
.gcg-rel a{background:#fff;border:1px solid var(--gcg-line);border-radius:999px;padding:9px 18px;font-size:13.5px;font-weight:600;color:var(--gcg-graphite-dk);transition:all .15s}
.gcg-rel a:hover{background:var(--gcg-graphite);color:#fff;text-decoration:none;border-color:var(--gcg-graphite)}

/* ---------- final CTA ---------- */
.gcg-final{background:linear-gradient(150deg,#141a24,#232c3b 70%,#3a3f4d);border-radius:20px;padding:56px 40px;text-align:center;color:#eef2f6;position:relative;overflow:hidden}
.gcg-final::before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(0deg,rgba(255,255,255,.04) 0 1px,transparent 1px 30px);pointer-events:none}
.gcg-final h2{color:#fff;margin-bottom:12px}
.gcg-final p{color:#c3ccd8;max-width:640px;margin:0 auto 26px;font-size:15.5px}

/* ---------- responsive ---------- */
@media (max-width:960px){
  .gcg-hero .gcg-wrap{grid-template-columns:1fr;padding-top:56px;padding-bottom:56px}
  .gcg-overview,.gcg-grid,.gcg-app,.gcg-qc-grid,.gcg-grid-2{grid-template-columns:1fr}
  .gcg-case-grid{grid-template-columns:1fr}
  .gcg-case-cell:first-child{border-right:none;border-bottom:1px solid var(--gcg-line-soft)}
  .gcg-rfq{grid-template-columns:1fr}
  .gcg-hero-specs{grid-template-columns:1fr}
}
@media (max-width:600px){
  .gcg-section{padding:52px 0}
  .gcg-final{padding:44px 22px}
  .gcg-flow-arrow{transform:rotate(90deg)}
}