/* Grind Tech PCS — black / chrome / green system (per Charlie's concept) */
:root{
  --bg:#05070a;
  --bg2:#090d12;
  --panel:#0c1118;
  --panel-line:#1d2733;
  --text:#eef1f5;
  --chrome:#c7cedb;
  --dim:#98a2b3;
  --green:#2fe673;
  --green-deep:#17b857;
  --radius:16px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:"Segoe UI",system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;line-height:1.6}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:1180px;margin:0 auto;padding:0 22px}

/* header */
header{position:sticky;top:0;z-index:50;background:rgba(5,7,10,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--panel-line)}
.nav{display:flex;align-items:center;gap:28px;height:72px}
.logo{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:.06em;font-size:1.22rem}
.logo .mark{width:40px;height:40px;border:2px solid var(--green);border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--green);font-style:italic;font-weight:900;font-size:1.05rem}
.logo .grind{color:#fff}
.logo .tech{color:var(--green)}
.logo .pcs{color:var(--chrome);font-size:.72rem;letter-spacing:.28em;display:block;line-height:1;font-weight:700}
nav.links{display:flex;gap:26px;margin-left:auto;font-size:.98rem;color:var(--chrome)}
nav.links a{padding:6px 2px;border-bottom:2px solid transparent}
nav.links a:hover{color:#fff}
nav.links a.active{color:#fff;border-bottom-color:var(--green)}
.btn{display:inline-block;background:var(--green);color:#04140a;font-weight:700;padding:12px 26px;border-radius:10px;font-size:1rem;border:0;cursor:pointer}
.btn:hover{background:var(--green-deep);color:#fff}
.btn.ghost{background:transparent;color:var(--green);border:2px solid var(--green)}
.btn.ghost:hover{background:rgba(47,230,115,.12)}
.nav .btn{margin-left:8px;padding:10px 22px}

/* hero */
.hero{padding:64px 0 30px;background:radial-gradient(1100px 480px at 75% 0%,rgba(47,230,115,.10),transparent 60%),var(--bg)}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:44px;align-items:center}
.eyebrow{color:var(--green);letter-spacing:.34em;font-size:.8rem;font-weight:700;text-transform:uppercase;margin-bottom:14px}
h1{font-size:clamp(2.1rem,4.6vw,3.4rem);line-height:1.08;font-weight:900;letter-spacing:.01em;text-transform:uppercase}
h1 .g{color:var(--green)}
.lede{color:var(--chrome);font-size:1.13rem;margin:20px 0 28px;max-width:34rem}
.hero-img{border-radius:var(--radius);border:1px solid var(--panel-line);box-shadow:0 24px 60px rgba(0,0,0,.55)}
.cta-row{display:flex;gap:14px;flex-wrap:wrap}

/* strips & sections */
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:44px 0 6px}
.pillar{background:var(--panel);border:1px solid var(--panel-line);border-radius:var(--radius);padding:20px 22px;display:flex;gap:14px;align-items:center}
.pillar .ic{font-size:1.5rem}
.pillar b{display:block;font-size:1.02rem}
.pillar span{color:var(--dim);font-size:.92rem}
section{padding:56px 0}
section.alt{background:var(--bg2);border-top:1px solid var(--panel-line);border-bottom:1px solid var(--panel-line)}
h2{font-size:clamp(1.6rem,3.2vw,2.3rem);font-weight:900;text-transform:uppercase;line-height:1.15}
h2 .g{color:var(--green)}
.sub{color:var(--chrome);max-width:44rem;margin-top:12px}
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:30px}
.cards.c3{grid-template-columns:repeat(3,1fr)}
.card{background:var(--panel);border:1px solid var(--panel-line);border-radius:var(--radius);padding:24px 20px}
.card .ic{font-size:1.7rem;margin-bottom:12px}
.card h3{font-size:1.06rem;margin-bottom:8px}
.card p{color:var(--dim);font-size:.95rem}
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.checks{list-style:none;margin-top:18px}
.checks li{padding:7px 0 7px 30px;position:relative;color:var(--chrome)}
.checks li::before{content:"✓";position:absolute;left:0;color:var(--green);font-weight:900}
.chips{display:flex;flex-wrap:wrap;gap:9px;margin-top:20px}
.chip{border:1px solid var(--panel-line);background:var(--panel);color:var(--chrome);padding:7px 14px;border-radius:999px;font-size:.9rem}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:30px}
.step{background:var(--panel);border:1px solid var(--panel-line);border-radius:var(--radius);padding:22px 20px}
.step .n{color:var(--green);font-weight:900;font-size:1.3rem}
.step h3{margin:8px 0 6px;font-size:1.02rem}
.step p{color:var(--dim);font-size:.94rem}
details{background:var(--panel);border:1px solid var(--panel-line);border-radius:12px;padding:16px 20px;margin-top:12px}
summary{cursor:pointer;font-weight:700}
details p{color:var(--dim);margin-top:8px}
.cta-band{background:linear-gradient(120deg,rgba(47,230,115,.14),rgba(47,230,115,.04));border:1px solid var(--panel-line);border-radius:var(--radius);padding:38px 34px;display:flex;align-items:center;gap:26px;flex-wrap:wrap}
.cta-band h2{flex:1;min-width:260px}

/* form */
form{display:grid;gap:14px;margin-top:24px}
label{font-weight:600;font-size:.95rem}
input,select,textarea{width:100%;background:var(--panel);border:1px solid var(--panel-line);border-radius:10px;color:var(--text);padding:12px 14px;font:inherit;margin-top:6px}
input:focus,select,textarea:focus{outline:2px solid var(--green-deep)}
.note{color:var(--dim);font-size:.92rem}

/* footer */
footer{border-top:1px solid var(--panel-line);background:#04060a;padding:44px 0 30px;margin-top:0}
.foot{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:34px}
footer h4{margin-bottom:12px;font-size:1rem}
footer ul{list-style:none}
footer li{margin:7px 0}
footer a,footer p{color:var(--dim);font-size:.95rem}
footer a:hover{color:var(--green)}
.copy{border-top:1px solid var(--panel-line);margin-top:32px;padding-top:18px;color:var(--dim);font-size:.88rem;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}

@media (max-width:920px){
  .hero-grid,.split{grid-template-columns:1fr}
  .cards,.cards.c3,.steps{grid-template-columns:repeat(2,1fr)}
  .pillars{grid-template-columns:1fr}
  .foot{grid-template-columns:1fr}
  .nav{flex-wrap:wrap;height:auto;padding:10px 0;row-gap:6px}
  nav.links{display:flex;order:3;width:100%;margin-left:0;justify-content:space-between;gap:8px;font-size:.92rem}
}
@media (max-width:540px){
  .cards,.cards.c3,.steps{grid-template-columns:1fr}
}