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

:root{
  --navy: #0F2A3D;
  --steel: #2C5F7C;
  --amber: #E8873A;
  --amber-dim: #C96F28;
  --panel: #16374C;
  --bg: #F5F7F8;
  --card: #FFFFFF;
  --line: #D9E1E6;
  --ink: #1C2529;
  --ink-soft: #566470;
  --green: #3FAE5A;
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:'IBM Plex Sans', sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.5;
}
.mono{font-family:'IBM Plex Mono', monospace;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px;}
ul{list-style:none;}

/* ---------- Header / Nav ---------- */
header{
  background:var(--navy);
  color:#fff;
  position:sticky;
  top:0;
  z-index:50;
  border-bottom:3px solid var(--amber);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:14px 24px;
  max-width:1180px;
  margin:0 auto;
  gap:16px;
}
.logo{
  font-weight:700;
  font-size:1.05rem;
  letter-spacing:0.02em;
  display:flex;
  align-items:center;
  gap:10px;
}
.logo-mark{
  width:14px;height:14px;background:var(--amber);
  box-shadow:0 0 0 3px rgba(232,135,58,0.25);
  flex-shrink:0;
}
.logo-sub{
  font-family:'IBM Plex Mono', monospace;
  font-size:0.6rem;
  color:#9FB6C4;
  letter-spacing:0.1em;
  text-transform:uppercase;
  display:block;
  margin-top:1px;
}

nav.main-nav{display:none;align-items:center;gap:28px;}
@media(min-width:900px){nav.main-nav{display:flex;}}
nav.main-nav a{
  font-size:0.88rem;
  font-weight:500;
  color:#C3D2DA;
  padding:6px 0;
  position:relative;
}
nav.main-nav a:hover, nav.main-nav a.active{color:#fff;}
nav.main-nav a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--amber);
}
.nav-dropdown{position:relative;}
.nav-dropdown-panel{
  display:none;
  position:absolute;
  top:100%;left:50%;
  transform:translateX(-50%);
  background:var(--panel);
  border:1px solid rgba(255,255,255,0.1);
  border-top:2px solid var(--amber);
  min-width:260px;
  padding:10px;
  border-radius:0 0 4px 4px;
  box-shadow:0 20px 40px -12px rgba(0,0,0,0.5);
}
.nav-dropdown:hover .nav-dropdown-panel{display:block;}
.nav-dropdown-panel a{
  display:block;
  padding:9px 12px;
  font-size:0.82rem;
  color:#C3D2DA;
  border-radius:2px;
}
.nav-dropdown-panel a:hover{background:rgba(255,255,255,0.06);color:#fff;}

.header-actions{display:flex;gap:10px;align-items:center;}
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 18px;
  border-radius:2px;
  font-weight:600;
  font-size:0.85rem;
  border:1px solid transparent;
  cursor:pointer;
  transition:all .15s ease;
  white-space:nowrap;
}
.btn-amber{background:var(--amber);color:var(--navy);}
.btn-amber:hover{background:var(--amber-dim);}
.btn-ghost{border-color:rgba(255,255,255,0.3);color:#fff;}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,0.08);}
.header-actions .btn-ghost{display:none;}
@media(min-width:640px){.header-actions .btn-ghost{display:inline-flex;}}

.mobile-toggle{
  display:flex;background:none;border:1px solid rgba(255,255,255,0.3);color:#fff;
  padding:8px 10px;border-radius:2px;font-size:0.8rem;cursor:pointer;
}
@media(min-width:900px){.mobile-toggle{display:none;}}
.mobile-menu{
  display:none;
  background:var(--panel);
  border-top:1px solid rgba(255,255,255,0.1);
  padding:14px 24px 20px;
}
.mobile-menu.open{display:block;}
.mobile-menu a{display:block;padding:10px 0;font-size:0.92rem;color:#C3D2DA;border-bottom:1px solid rgba(255,255,255,0.08);}
@media(min-width:900px){.mobile-menu{display:none !important;}}

/* ---------- Page Hero (inner pages) ---------- */
.page-hero{
  background:linear-gradient(180deg, var(--navy) 0%, var(--panel) 100%);
  color:#fff;
  padding:52px 0 56px;
  position:relative;
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(90deg, rgba(255,255,255,0.035) 0px, rgba(255,255,255,0.035) 1px, transparent 1px, transparent 64px);
  pointer-events:none;
}
.page-hero .wrap{position:relative;}
.crumb{
  font-family:'IBM Plex Mono', monospace;
  font-size:0.72rem;
  color:#7E97A5;
  letter-spacing:0.08em;
  text-transform:uppercase;
  margin-bottom:16px;
}
.crumb a:hover{color:var(--amber);}
.eyebrow{
  font-family:'IBM Plex Mono', monospace;
  font-size:0.75rem;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--amber);
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
}
.eyebrow::before{content:"";width:24px;height:1px;background:var(--amber);}
.page-hero h1{
  font-size:clamp(1.9rem, 4vw, 2.7rem);
  font-weight:700;
  line-height:1.15;
  letter-spacing:-0.01em;
  margin-bottom:14px;
  max-width:720px;
}
.page-hero h1 span{color:var(--amber);}
.page-hero p.lead{font-size:1.02rem;color:#C3D2DA;max-width:600px;}

/* ---------- Home Hero ---------- */
.hero{
  background:linear-gradient(180deg, var(--navy) 0%, var(--panel) 100%);
  color:#fff;
  padding:70px 0 84px;
  position:relative;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(90deg, rgba(255,255,255,0.035) 0px, rgba(255,255,255,0.035) 1px, transparent 1px, transparent 64px);
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1.15fr 0.85fr;gap:48px;align-items:center;position:relative;}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr;}}
h1{font-size:clamp(2.1rem, 4.2vw, 3.2rem);font-weight:700;line-height:1.12;letter-spacing:-0.01em;margin-bottom:20px;}
h1 span{color:var(--amber);}
.hero p.lead{font-size:1.08rem;color:#C3D2DA;max-width:520px;margin-bottom:32px;}
.hero-ctas{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:40px;}
.btn-lg{padding:14px 26px;font-size:0.95rem;}
.hero-stats{display:flex;gap:0;border-top:1px solid rgba(255,255,255,0.15);padding-top:22px;max-width:560px;}
.stat{flex:1;padding-right:20px;}
.stat b{display:block;font-family:'IBM Plex Mono', monospace;font-size:1.35rem;color:#fff;}
.stat span{font-size:0.78rem;color:#9FB6C4;}

.rack{background:var(--panel);border:1px solid rgba(255,255,255,0.12);border-radius:4px;padding:20px;box-shadow:0 30px 60px -20px rgba(0,0,0,0.5);}
.rack-head{display:flex;justify-content:space-between;align-items:center;font-family:'IBM Plex Mono', monospace;font-size:0.68rem;color:#7E97A5;letter-spacing:0.08em;text-transform:uppercase;margin-bottom:14px;padding-bottom:12px;border-bottom:1px dashed rgba(255,255,255,0.15);}
.rack-dot{width:7px;height:7px;border-radius:50%;background:var(--green);display:inline-block;margin-right:6px;box-shadow:0 0 6px var(--green);}
.module{display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,0.08);border-left:3px solid var(--amber);padding:12px 14px;margin-bottom:8px;border-radius:2px;}
.module:last-child{margin-bottom:0;}
.module-name{font-size:0.85rem;font-weight:600;color:#fff;}
.module-code{font-family:'IBM Plex Mono', monospace;font-size:0.68rem;color:#7E97A5;}
.module-led{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 5px var(--green);flex-shrink:0;}

/* ---------- Section shared ---------- */
section{padding:78px 0;}
.section-head{max-width:640px;margin-bottom:48px;}
.section-head .eyebrow{color:var(--amber-dim);}
.section-head h2{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:700;color:var(--navy);letter-spacing:-0.01em;margin-bottom:12px;}
.section-head p{color:var(--ink-soft);font-size:1rem;}

/* ---------- Categories grid ---------- */
.categories{background:var(--card);}
.cat-grid{display:grid;grid-template-columns:repeat(4, 1fr);gap:2px;background:var(--line);border:1px solid var(--line);}
@media(max-width:860px){.cat-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:520px){.cat-grid{grid-template-columns:1fr;}}
.cat-card{display:block;background:#fff;padding:30px 24px;position:relative;transition:background .15s ease;}
.cat-card:hover{background:#FBFAF7;}
.cat-num{font-family:'IBM Plex Mono', monospace;font-size:0.72rem;color:var(--amber-dim);display:flex;align-items:center;gap:8px;margin-bottom:18px;}
.cat-num .led{width:6px;height:6px;border-radius:50%;background:var(--green);box-shadow:0 0 4px var(--green);}
.cat-card h3{font-size:1.08rem;font-weight:700;color:var(--navy);margin-bottom:8px;}
.cat-card p{font-size:0.88rem;color:var(--ink-soft);}

/* ---------- Trust strip ---------- */
.trust{background:var(--navy);color:#fff;}
.trust-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;}
@media(max-width:760px){.trust-grid{grid-template-columns:1fr;gap:28px;}}
.trust-item{border-left:2px solid var(--amber);padding-left:18px;}
.trust-item h4{font-size:1rem;font-weight:600;margin-bottom:6px;}
.trust-item p{font-size:0.88rem;color:#AFC2CC;}

/* ---------- Contact ---------- */
.contact{background:var(--bg);}
.contact-grid{display:grid;grid-template-columns:0.9fr 1.1fr;gap:0;border:1px solid var(--line);background:var(--card);}
@media(max-width:860px){.contact-grid{grid-template-columns:1fr;}}
.contact-info{background:var(--panel);color:#fff;padding:44px 38px;}
.contact-info h3{font-size:1.3rem;font-weight:700;margin-bottom:10px;}
.contact-info p.desc{color:#AFC2CC;font-size:0.92rem;margin-bottom:32px;}
.info-line{display:flex;gap:14px;align-items:flex-start;padding:16px 0;border-top:1px solid rgba(255,255,255,0.12);}
.info-line:first-of-type{border-top:none;}
.info-line .ico{width:32px;height:32px;flex-shrink:0;border:1px solid rgba(255,255,255,0.25);border-radius:3px;display:flex;align-items:center;justify-content:center;font-size:0.85rem;}
.info-line a{font-weight:600;font-size:0.95rem;}
.info-line a:hover{color:var(--amber);}
.info-line .label{font-family:'IBM Plex Mono', monospace;font-size:0.66rem;color:#7E97A5;text-transform:uppercase;letter-spacing:0.08em;display:block;margin-bottom:2px;}

.contact-form{padding:44px 38px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px;}
@media(max-width:520px){.form-row{grid-template-columns:1fr;}}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:16px;}
.field label{font-size:0.78rem;font-weight:600;color:var(--navy);}
.field input, .field textarea, .field select{border:1px solid var(--line);border-radius:2px;padding:11px 12px;font-family:'IBM Plex Sans', sans-serif;font-size:0.92rem;background:#fff;color:var(--ink);}
.field input:focus, .field textarea:focus, .field select:focus{outline:2px solid var(--amber);outline-offset:1px;border-color:var(--amber);}
.field textarea{resize:vertical;min-height:100px;}
.submit-row{display:flex;align-items:center;gap:16px;margin-top:8px;flex-wrap:wrap;}
#formNote{font-size:0.82rem;color:var(--ink-soft);}

/* ---------- Category detail page ---------- */
.detail-body{background:var(--card);}
.detail-grid{display:grid;grid-template-columns:1.3fr 0.7fr;gap:48px;}
@media(max-width:900px){.detail-grid{grid-template-columns:1fr;}}
.detail-grid h2{font-size:1.5rem;font-weight:700;color:var(--navy);margin-bottom:16px;}
.detail-grid p{color:var(--ink-soft);margin-bottom:16px;font-size:0.98rem;}
.detail-list{margin:20px 0;}
.detail-list li{
  display:flex;gap:10px;align-items:flex-start;
  padding:12px 0;border-top:1px solid var(--line);
  font-size:0.92rem;color:var(--ink);
}
.detail-list li:first-child{border-top:none;}
.detail-list li::before{content:"▸";color:var(--amber-dim);font-weight:700;flex-shrink:0;}
.detail-side{
  background:var(--bg);
  border:1px solid var(--line);
  padding:28px 24px;
  height:fit-content;
}
.detail-side .cat-num{margin-bottom:14px;}
.detail-side h4{font-size:1rem;font-weight:700;color:var(--navy);margin-bottom:10px;}
.detail-side p{font-size:0.88rem;color:var(--ink-soft);margin-bottom:20px;}
.related-cats{margin-top:60px;}
.related-cats h3{font-size:1.2rem;color:var(--navy);margin-bottom:20px;font-weight:700;}

/* ---------- About page ---------- */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start;}
@media(max-width:860px){.about-grid{grid-template-columns:1fr;}}
.about-grid h2{font-size:1.5rem;font-weight:700;color:var(--navy);margin-bottom:16px;}
.about-grid p{color:var(--ink-soft);margin-bottom:16px;font-size:0.98rem;}
.value-list{display:flex;flex-direction:column;gap:0;}
.value-item{padding:20px 0;border-top:1px solid var(--line);}
.value-item:first-child{border-top:none;}
.value-item h4{font-size:0.98rem;font-weight:700;color:var(--navy);margin-bottom:6px;display:flex;align-items:center;gap:10px;}
.value-item h4 .num{font-family:'IBM Plex Mono', monospace;color:var(--amber-dim);font-size:0.85rem;}
.value-item p{font-size:0.88rem;color:var(--ink-soft);margin:0;}

/* ---------- Footer ---------- */
footer{background:var(--navy);color:#8FA6B3;padding:40px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px;margin-bottom:28px;}
@media(max-width:760px){.footer-grid{grid-template-columns:1fr;gap:24px;}}
.footer-grid h5{color:#fff;font-size:0.82rem;text-transform:uppercase;letter-spacing:0.08em;margin-bottom:14px;font-family:'IBM Plex Mono', monospace;}
.footer-grid p{font-size:0.86rem;line-height:1.7;color:#8FA6B3;}
.footer-grid a{display:block;font-size:0.86rem;padding:5px 0;color:#8FA6B3;}
.footer-grid a:hover{color:var(--amber);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.1);
  padding-top:20px;
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;
  font-size:0.8rem;
}
.footer-bottom .logo{color:#fff;font-size:0.9rem;}

@media(prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *{transition:none !important;}
}