/* SB Cyber Lab — minimal, professional, mobile-first */
:root{
  --bg:#fff;
  --text:#111827;
  --muted:#4b5563;
  --border:#e5e7eb;
  --alt:#f8fafc;
  --gold:#B7791F;        /* accessible on white */
  --gold-soft: rgba(183,121,31,0.12);
  --shadow: 0 10px 30px rgba(17,24,39,0.08);
  --radius:18px;
  --max:1120px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,"Apple Color Emoji","Segoe UI Emoji";
  color:var(--text);
  background:var(--bg);
  line-height:1.55;
}
a{color:inherit;text-decoration:none;}
a:hover{text-decoration:underline;text-underline-offset:3px;}
p{margin:0 0 12px;}
h1,h2,h3{line-height:1.15;margin:0 0 10px;}
h1{font-size:clamp(2rem,3.4vw,3rem);letter-spacing:-0.02em;}
h2{font-size:clamp(1.5rem,2.2vw,2rem);letter-spacing:-0.01em;}
h3{font-size:1.05rem;}
.container{width:min(var(--max),calc(100% - 40px));margin:0 auto;}
.skip-link{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden;}
.skip-link:focus{left:12px;top:12px;width:auto;height:auto;padding:10px 12px;background:#111827;color:#fff;border-radius:10px;z-index:9999;}
/* Header */
.site-header{
  position:sticky;top:0;
  background:rgba(255,255,255,0.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
  z-index:50;
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:10px 0;}
.brand-logo{height:46px;width:auto;display:block;}
.nav{display:flex;align-items:center;}
.nav-menu{display:flex;align-items:center;gap:18px;list-style:none;padding:0;margin:0;}
.nav-menu a{font-weight:650;color:var(--muted);}
.nav-menu a:hover{color:var(--text);text-decoration:none;}
.nav-toggle{
  display:none;background:transparent;border:1px solid var(--border);
  border-radius:12px;padding:10px 12px;
}
.nav-toggle-bars{display:block;width:18px;height:12px;border-top:2px solid var(--text);border-bottom:2px solid var(--text);position:relative;}
.nav-toggle-bars::after{content:"";position:absolute;left:0;right:0;top:4px;border-top:2px solid var(--text);}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}
/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--text);color:#fff;border:1px solid var(--text);
  border-radius:999px;padding:12px 18px;font-weight:750;text-decoration:none;
  box-shadow:0 8px 18px rgba(17,24,39,0.15);
}
.btn:hover{text-decoration:none;filter:brightness(1.02);}
.btn:active{transform:translateY(1px);}
.btn-small{padding:10px 14px;font-weight:750;}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--border);box-shadow:none;}
.btn-ghost:hover{background:var(--alt);}
/* Hero */
.hero{padding:54px 0 18px;}
.hero-inner{display:grid;grid-template-columns:1.25fr 0.9fr;gap:28px;align-items:start;}
.eyebrow{
  display:inline-block;padding:6px 10px;border:1px solid var(--border);
  border-radius:999px;background:var(--alt);color:var(--muted);
  font-weight:650;font-size:0.92rem;margin-bottom:12px;
}
.lead{font-size:1.06rem;color:var(--muted);max-width:58ch;}
.hero-cta{display:flex;gap:12px;margin:18px 0 14px;flex-wrap:wrap;}
.trust{display:flex;flex-wrap:wrap;gap:10px;list-style:none;padding:0;margin:12px 0 0;color:var(--muted);}
.trust li{border:1px solid var(--border);background:#fff;padding:8px 10px;border-radius:999px;font-weight:650;font-size:0.92rem;}
.hero-card{
  border:1px solid var(--border);background:#fff;border-radius:var(--radius);
  box-shadow:var(--shadow);padding:18px 18px 16px;
}
.card-title{font-size:1.05rem;margin-bottom:10px;}
.note{color:var(--muted);margin-top:10px;}
.checklist{list-style:none;padding:0;margin:0;}
.checklist li{padding-left:28px;position:relative;margin:10px 0;}
.checklist li::before{
  content:"";position:absolute;left:0;top:7px;width:16px;height:16px;border-radius:6px;
  background:var(--gold-soft);border:1px solid rgba(183,121,31,0.35);
}
.checklist li::after{content:"✓";position:absolute;left:4px;top:2px;font-size:0.95rem;color:var(--gold);}
/* Sections */
.section{padding:46px 0;}
.section.alt{background:var(--alt);border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:14px;margin-bottom:18px;flex-wrap:wrap;}
.section-head p{color:var(--muted);max-width:68ch;}
/* Services grid */
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;}
.tile{border:1px solid var(--border);background:#fff;border-radius:var(--radius);padding:16px 14px;box-shadow:0 6px 18px rgba(17,24,39,0.05);}
.tile p{color:var(--muted);margin:6px 0 0;}
/* Highlights */
.bullets{margin:0;padding-left:18px;}
.bullets li{margin:10px 0;color:var(--muted);}
.bullets li::marker{color:var(--gold);}
/* About */
.about{display:grid;grid-template-columns:1.2fr 0.8fr;gap:18px;align-items:start;}
.muted{color:var(--muted);}
.about-box{border:1px solid var(--border);background:#fff;border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);}
/* Contact */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start;}
.contact-cards{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:14px;}
.mini-card{border:1px solid var(--border);border-radius:16px;padding:12px;background:#fff;}
.mini-label{color:var(--muted);font-weight:750;font-size:0.9rem;margin-bottom:6px;}
.form{border:1px solid var(--border);background:#fff;border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);}
label{display:block;font-weight:750;margin:10px 0 6px;}
input,textarea{width:100%;padding:12px;border-radius:14px;border:1px solid var(--border);font:inherit;background:#fff;}
input:focus,textarea:focus{outline:none;border-color:rgba(183,121,31,0.55);box-shadow:0 0 0 4px rgba(183,121,31,0.18);}
.form-note{color:var(--muted);font-size:0.93rem;margin-top:10px;}
.honeypot{display:none!important;}
/* Footer */
.footer{padding:24px 0;}
.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:10px;border-top:1px solid var(--border);padding-top:16px;flex-wrap:wrap;}
/* Responsive */
@media (max-width: 980px){
  .hero-inner{grid-template-columns:1fr;}
  .grid{grid-template-columns:repeat(2,1fr);}
  .about{grid-template-columns:1fr;}
  .contact{grid-template-columns:1fr;}
}
@media (max-width: 720px){
  .brand-logo{height:42px;}
  .nav-toggle{display:inline-flex;}
  .nav-menu{
    position:absolute;right:20px;top:64px;background:#fff;border:1px solid var(--border);
    border-radius:16px;padding:10px;box-shadow:var(--shadow);
    display:none;flex-direction:column;align-items:stretch;min-width:220px;
  }
  .nav-menu.show{display:flex;}
  .nav-menu a{padding:10px 12px;border-radius:12px;}
  .nav-menu a:hover{background:var(--alt);}
  .grid{grid-template-columns:1fr;}
  .contact-cards{grid-template-columns:1fr;}
}