:root{
    --bg: #10161b;
    --panel: #161e24;
    --panel-2: #1c262d;
    --cream: #ece7dc;
    --cream-dim: #c9c3b4;
    --green: #2f5233;
    --green-light: #4a7350;
    --brass: #c9a24b;
    --brass-dim: #a3833c;
    --steel: #6b7580;
    --steel-dark: #333e46;
    --rule: rgba(236,231,220,0.12);
    --radius: 2px;
  }

  *{ box-sizing: border-box; }
  html{ scroll-behavior: smooth; }
  body{
    margin:0;
    background: var(--bg);
    color: var(--cream);
    font-family: 'Work Sans', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }

  h1,h2,h3,h4{
    font-family: 'Big Shoulders Display', sans-serif;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    margin: 0;
    color: var(--cream);
    font-weight: 700;
  }

  .mono{
    font-family: 'IBM Plex Mono', monospace;
    letter-spacing: 0.04em;
  }

  a{ color: var(--brass); text-decoration: none; }
  a:hover{ color: var(--cream); }

  a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
    outline: 2px solid var(--brass);
    outline-offset: 3px;
  }

  .wrap{
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 32px;
  }

  @media (max-width: 640px){
    .wrap{ padding: 0 20px; }
  }

  /* ===== NAV ===== */
  header.site-nav{
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(16,22,27,0.92);
    backdrop-filter: blur(6px);
    border-bottom: 1px solid var(--rule);
  }
  .nav-inner{
    display:flex;
    align-items:center;
    justify-content: space-between;
    padding: 18px 32px;
    max-width: 1120px;
    margin: 0 auto;
  }
  .nav-brand{
    font-family: 'Big Shoulders Display', sans-serif;
    font-size: 22px;
    letter-spacing: 0.08em;
    display:flex;
    align-items:center;
    gap: 10px;
  }
  .nav-brand .dot{ color: var(--brass); }
  nav.links{
    display:flex;
    gap: 32px;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 13px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
  }
  nav.links a{ color: var(--cream-dim); transition: color .15s; }
  nav.links a:hover{ color: var(--brass); }
  .nav-cta{
    font-family: 'IBM Plex Mono', monospace;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: 1px solid var(--brass-dim);
    padding: 9px 16px;
    color: var(--brass);
    white-space: nowrap;
  }
  .nav-cta:hover{ background: var(--brass); color: var(--bg); }
  .nav-toggle{ display:none; }

  @media (max-width: 780px){
    nav.links{ display:none; }
    .nav-cta{ display:none; }
  }

  /* ===== HERO ===== */
  .hero{
    padding: 96px 0 88px;
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--rule);
    background:
      radial-gradient(ellipse at 78% 20%, rgba(47,82,51,0.35), transparent 55%),
      var(--bg);
  }
  .hero-inner{
    display:grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 56px;
    align-items:center;
  }
  @media (max-width: 900px){
    .hero-inner{ grid-template-columns: 1fr; }
    .hero-badge-col{ order:-1; display:flex; justify-content:center; }
  }
  .eyebrow{
    font-family:'IBM Plex Mono', monospace;
    font-size: 13px;
    color: var(--brass);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    display:flex;
    align-items:center;
    gap: 10px;
    margin-bottom: 22px;
  }
  .eyebrow::before{
    content:'';
    width: 28px; height: 1px;
    background: var(--brass-dim);
    display:inline-block;
  }
  .hero h1{
    font-size: clamp(42px, 6vw, 68px);
    line-height: 0.98;
    margin-bottom: 24px;
  }
  .hero h1 em{
    font-style: normal;
    color: var(--green-light);
  }
  .hero p.lede{
    font-size: 18px;
    color: var(--cream-dim);
    max-width: 46ch;
    margin-bottom: 34px;
  }
  .hero-actions{ display:flex; gap: 16px; flex-wrap: wrap; }

  .btn{
    display:inline-block;
    font-family:'IBM Plex Mono', monospace;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 15px 26px;
    border: 1px solid transparent;
    cursor: pointer;
  }
  .btn-primary{ background: var(--brass); color: var(--bg); }
  .btn-primary:hover{ background: var(--cream); color: var(--bg); }
  .btn-ghost{ border-color: var(--steel); color: var(--cream); }
  .btn-ghost:hover{ border-color: var(--cream); }

  /* badge signature element */
  .badge-wrap{ width: 100%; max-width: 340px; }
  .badge-wrap svg{ width:100%; height:auto; }
  @keyframes rotate-slow{ from{ transform: rotate(0deg);} to{ transform: rotate(360deg);} }
  .badge-ring-text{ animation: rotate-slow 40s linear infinite; transform-origin: 200px 200px; }
  @media (prefers-reduced-motion: reduce){ .badge-ring-text{ animation: none; } }

  /* ===== SECTION HEADERS ===== */
  .section{ padding: 88px 0; border-bottom: 1px solid var(--rule); }
  .section-head{
    display:flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 24px;
    margin-bottom: 48px;
    flex-wrap: wrap;
  }
  .section-head .num{
    font-family:'IBM Plex Mono', monospace;
    color: var(--steel);
    font-size: 13px;
  }
  .section-head h2{ font-size: clamp(30px, 3.6vw, 42px); }
  .section-head p{ color: var(--cream-dim); max-width: 46ch; margin-top: 10px; }

  /* ===== SERVICES ===== */
  .services-grid{
    display:grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--rule);
    border: 1px solid var(--rule);
  }
  @media (max-width: 900px){ .services-grid{ grid-template-columns: repeat(2,1fr);} }
  @media (max-width: 560px){ .services-grid{ grid-template-columns: 1fr;} }
  .service-card{
    background: var(--panel);
    padding: 32px 26px;
    min-height: 220px;
    display:flex;
    flex-direction: column;
    justify-content: space-between;
  }
  .service-card .tag{
    font-family:'IBM Plex Mono', monospace;
    font-size: 12px;
    color: var(--brass);
    letter-spacing: 0.08em;
  }
  .service-card h3{
    font-size: 24px;
    margin: 18px 0 10px;
    text-transform: none;
    letter-spacing: 0;
  }
  .service-card p{ color: var(--cream-dim); font-size: 14.5px; margin:0; }

  /* ===== CASE STUDIES — spec sheet style ===== */
  .case-grid{
    display:grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
  @media (max-width: 900px){ .case-grid{ grid-template-columns: 1fr; } }
  .case-card{
    border: 1px solid var(--steel-dark);
    background: var(--panel);
  }
  .case-head{
    padding: 20px 22px;
    border-bottom: 1px dashed var(--steel-dark);
    display:flex;
    justify-content: space-between;
    align-items: baseline;
  }
  .case-head .model{
    font-family:'Big Shoulders Display', sans-serif;
    font-size: 20px;
    letter-spacing: 0.03em;
  }
  .case-head .code{
    font-family:'IBM Plex Mono', monospace;
    font-size: 11px;
    color: var(--steel);
  }
  .case-body{ padding: 22px; }
  .case-body p.desc{ color: var(--cream-dim); font-size: 14px; margin: 0 0 18px; }
  .spec-row{
    display:flex;
    justify-content: space-between;
    padding: 9px 0;
    border-top: 1px solid var(--rule);
    font-family:'IBM Plex Mono', monospace;
    font-size: 13px;
  }
  .spec-row:first-of-type{ border-top: none; }
  .spec-row .k{ color: var(--steel); text-transform: uppercase; letter-spacing: 0.04em; font-size: 11.5px; }
  .spec-row .v{ color: var(--green-light); font-weight: 500; }
  .case-note{
    margin-top: 44px;
    padding: 18px 22px;
    border: 1px dashed var(--steel-dark);
    color: var(--steel);
    font-size: 13px;
    font-family: 'IBM Plex Mono', monospace;
  }

  /* ===== RESOURCES ===== */
  .resource-list{ display:flex; flex-direction: column; }
  .resource-row{
    display:grid;
    grid-template-columns: 90px 1fr auto;
    gap: 24px;
    align-items: center;
    padding: 26px 0;
    border-top: 1px solid var(--rule);
  }
  .resource-row:last-child{ border-bottom: 1px solid var(--rule); }
  @media (max-width: 640px){
    .resource-row{ grid-template-columns: 1fr; gap: 8px; }
    .resource-row .arrow{ display:none; }
  }
  .resource-row .idx{
    font-family:'IBM Plex Mono', monospace;
    color: var(--steel);
    font-size: 13px;
  }
  .resource-row h4{
    font-size: 21px;
    text-transform: none;
    letter-spacing: 0;
    margin-bottom: 6px;
  }
  .resource-row p{ color: var(--cream-dim); font-size: 14px; margin:0; }
  .resource-row .arrow{ color: var(--brass); font-size: 22px; }

  /* ===== CONTACT ===== */
  .contact-section{ border-bottom: none; }
  .contact-grid{
    display:grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 56px;
  }
  @media (max-width: 900px){ .contact-grid{ grid-template-columns: 1fr; } }
  .contact-info h3{ font-size: 26px; margin-bottom: 16px; text-transform: none; letter-spacing:0; }
  .contact-info p{ color: var(--cream-dim); margin-bottom: 24px; max-width: 40ch; }
  .contact-line{
    display:flex;
    gap: 12px;
    padding: 12px 0;
    border-top: 1px solid var(--rule);
    font-family:'IBM Plex Mono', monospace;
    font-size: 13.5px;
  }
  .contact-line .k{ color: var(--steel); min-width: 90px; text-transform: uppercase; letter-spacing: 0.04em; }

  form.contact-form{
    background: var(--panel);
    border: 1px solid var(--rule);
    padding: 32px;
  }
  .field{ margin-bottom: 20px; }
  .field label{
    display:block;
    font-family:'IBM Plex Mono', monospace;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--steel);
    margin-bottom: 8px;
  }
  .field input, .field textarea{
    width: 100%;
    background: var(--bg);
    border: 1px solid var(--steel-dark);
    color: var(--cream);
    padding: 12px 14px;
    font-family: 'Work Sans', sans-serif;
    font-size: 15px;
  }
  .field input:focus, .field textarea:focus{ border-color: var(--brass); }
  .field textarea{ min-height: 110px; resize: vertical; }
  .form-status{ font-family:'IBM Plex Mono', monospace; font-size: 13px; margin-top: 14px; color: var(--green-light); min-height: 18px; }

  /* ===== FOOTER ===== */
  footer{ padding: 40px 0 48px; }
  .footer-inner{
    display:flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    font-family:'IBM Plex Mono', monospace;
    font-size: 12.5px;
    color: var(--steel);
  }
  .footer-inner a{ color: var(--steel); }
  .footer-inner a:hover{ color: var(--brass); }

/* ===== resource-row as link ===== */
a.resource-row{ color: inherit; display:grid; }
a.resource-row:hover h4{ color: var(--brass); }
a.resource-row:hover .arrow{ transform: translateX(4px); }
.resource-row .arrow{ transition: transform .15s; }

/* ===== ARTICLE PAGES ===== */
.article-hero{
  padding: 72px 0 56px;
  border-bottom: 1px solid var(--rule);
  background: radial-gradient(ellipse at 85% 10%, rgba(47,82,51,0.28), transparent 55%), var(--bg);
}
.article-hero .back-link{
  font-family:'IBM Plex Mono', monospace;
  font-size: 13px;
  color: var(--steel);
  display:inline-flex;
  align-items:center;
  gap: 8px;
  margin-bottom: 28px;
}
.article-hero .back-link:hover{ color: var(--brass); }
.article-hero h1{
  font-size: clamp(34px, 5vw, 52px);
  line-height: 1.02;
  max-width: 18ch;
  margin-bottom: 22px;
}
.article-meta{
  display:flex;
  gap: 20px;
  flex-wrap: wrap;
  font-family:'IBM Plex Mono', monospace;
  font-size: 12.5px;
  color: var(--steel);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.article-meta span{ color: var(--brass); }

.article-body{
  max-width: 720px;
  margin: 0 auto;
  padding: 64px 32px 96px;
}
.article-body p{
  color: var(--cream-dim);
  font-size: 17px;
  line-height: 1.75;
  margin: 0 0 22px;
}
.article-body p.lead{
  font-size: 19px;
  color: var(--cream);
}
.article-body h2{
  font-size: 28px;
  text-transform: none;
  letter-spacing: 0;
  margin: 48px 0 16px;
  padding-top: 24px;
  border-top: 1px solid var(--rule);
}
.article-body h2:first-of-type{ margin-top: 8px; }
.article-body ul, .article-body ol{
  color: var(--cream-dim);
  font-size: 16.5px;
  line-height: 1.75;
  padding-left: 22px;
  margin: 0 0 22px;
}
.article-body li{ margin-bottom: 10px; }
.article-body strong{ color: var(--cream); }
.pull-quote{
  border-left: 3px solid var(--brass);
  padding: 4px 0 4px 24px;
  margin: 36px 0;
  font-family:'Big Shoulders Display', sans-serif;
  font-size: 24px;
  line-height: 1.3;
  color: var(--cream);
  text-transform: none;
  letter-spacing: 0;
}
.article-cta{
  margin-top: 56px;
  padding: 28px;
  border: 1px solid var(--rule);
  background: var(--panel);
  display:flex;
  justify-content: space-between;
  align-items:center;
  gap: 20px;
  flex-wrap: wrap;
}
.article-cta p{ margin:0; color: var(--cream); font-size: 15px; max-width: 40ch; }
.article-cta p strong{ display:block; font-family:'Big Shoulders Display', sans-serif; font-size: 20px; text-transform: uppercase; margin-bottom: 4px; }

.related-articles{
  max-width: 720px;
  margin: 0 auto;
  padding: 0 32px 80px;
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
@media (max-width: 640px){ .related-articles{ grid-template-columns: 1fr; } }
.related-articles a{
  display:block;
  border: 1px solid var(--rule);
  padding: 20px;
  color: var(--cream);
}
.related-articles a:hover{ border-color: var(--brass); }
.related-articles .idx{ font-family:'IBM Plex Mono', monospace; font-size: 12px; color: var(--steel); display:block; margin-bottom: 8px; }
.related-articles h4{ font-size: 18px; text-transform: none; letter-spacing:0; margin:0; }

/* ===== ACCESSIBILITY: skip link ===== */
.skip-link{
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--cream);
  color: var(--bg);
  padding: 12px 20px;
  z-index: 999;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.skip-link:focus{
  left: 16px;
  top: 16px;
}