/* Techs At Work — product site
   Design system: "Dark Workshop × Bold Industrial" (owner pick 2026-08-09, directions B+C)
   - near-black blueprint grid, safety-orange accent, hard borders, mono spec labels
   - system font stacks only: no third-party requests */
:root {
  --bg: #0d1117;
  --panel: #121722;
  --ink: #e8eef5;
  --sub: #9fb0c3;
  --accent: #ff5c1a;
  --accent-ink: #16100a;
  --line: #2a3546;
  --mono: ui-monospace, "Cascadia Mono", "SF Mono", Menlo, Consolas, monospace;
  --max: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  /* T2 Drafting Table: dual-scale blueprint grid — fine 14px + major 70px */
  background-image:
    linear-gradient(rgba(90, 120, 160, 0.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(90, 120, 160, 0.10) 1px, transparent 1px),
    linear-gradient(rgba(90, 120, 160, 0.22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(90, 120, 160, 0.22) 1px, transparent 1px);
  background-size: 14px 14px, 14px 14px, 70px 70px, 70px 70px;
  background-attachment: fixed;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* T2 registration "+" corner marks on hero, slab grids, and download boxes */
.hero, .slabs, .download-box { position: relative; }
.hero::before, .slabs::before, .download-box::before,
.hero::after, .slabs::after, .download-box::after {
  content: "+"; position: absolute; font-family: var(--mono);
  color: var(--accent); font-size: 1.1rem; opacity: 0.85; pointer-events: none;
}
.hero::before, .slabs::before, .download-box::before { top: 14px; left: 18px; }
.hero::after, .slabs::after, .download-box::after { bottom: 10px; right: 18px; }

a { color: var(--ink); }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* Header */
header.site {
  position: sticky; top: 0; z-index: 10;
  background: rgba(13, 17, 23, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 3px solid var(--ink);
}
header.site .wrap { display: flex; align-items: center; justify-content: space-between; padding: 14px 24px; }
.brand { font-weight: 800; text-transform: uppercase; letter-spacing: 0.04em; font-size: 1rem;
         color: var(--ink); text-decoration: none; }
.brand span { color: var(--accent); }
nav.site { display: flex; align-items: center; }
nav.site a {
  color: var(--sub); text-decoration: none; margin-left: 22px;
  font-size: 0.82rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em;
}
nav.site a:hover, nav.site a[aria-current="page"] { color: var(--ink); }
nav.site a[aria-current="page"] { box-shadow: inset 0 -2px 0 var(--accent); }

/* Product tab bar (subpage nav) */
.tabs { border-bottom: 1px dashed var(--line); background: rgba(13, 17, 23, 0.88); }
.tabs .wrap { display: flex; gap: 4px; padding-top: 10px; }
.tabs a {
  font-family: var(--mono); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--sub); text-decoration: none; padding: 9px 16px;
  border: 2px solid transparent; border-bottom: none;
}
.tabs a:hover { color: var(--ink); }
.tabs a[aria-current="page"] { color: var(--accent); border-color: var(--line); border-style: dashed; background: var(--panel); }

/* Hero */
.hero { padding: 84px 0 60px; border-bottom: 3px double var(--ink); }
.kicker {
  display: inline-block; font-family: var(--mono); font-size: 0.78rem; color: var(--accent);
  letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 20px;
  border: 1px dashed var(--accent); padding: 5px 12px;
}
.hero h1 {
  font-size: clamp(2.8rem, 8vw, 5.6rem); line-height: 0.98; font-weight: 800;
  text-transform: uppercase; letter-spacing: -0.03em; margin: 0;
}
.hero h1 em { color: var(--accent); font-style: normal; }
.hero .lede { font-size: 1.2rem; font-weight: 500; color: var(--ink); max-width: 640px; margin: 26px 0 34px; }
.hero .lede.dim { color: var(--sub); font-size: 1.05rem; font-weight: 400; }

/* Buttons — hard borders, uppercase */
.btn {
  display: inline-block; padding: 15px 30px; font-weight: 800; text-decoration: none;
  text-transform: uppercase; letter-spacing: 0.06em; font-size: 0.9rem;
  border: 3px solid var(--ink); transition: transform 0.15s ease, background 0.15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-ghost { color: var(--ink); background: transparent; margin-left: 12px; border-style: dashed; }
.btn-ghost:hover { background: var(--panel); }
.btn[disabled] { opacity: 0.45; pointer-events: none; }

/* Sections */
section { padding: 56px 0; border-bottom: 1px dashed var(--line); }
section:last-of-type { border-bottom: none; }
h2 { font-size: clamp(1.5rem, 3.2vw, 2.1rem); text-transform: uppercase; font-weight: 800;
     letter-spacing: -0.01em; margin: 0 0 8px; }
h2 span { color: var(--accent); }
.sub { color: var(--sub); margin: 0 0 32px; max-width: 640px; }

/* Feature slabs — direction C bordered grid */
.slabs { display: grid; gap: 0; border: 3px solid var(--ink); background: var(--panel); }
.slabs-2 { grid-template-columns: 1fr 1fr; }
.slabs-3 { grid-template-columns: repeat(3, 1fr); }
.slab { padding: 28px 26px; border-right: 3px solid var(--ink); }
.slab:last-child { border-right: none; }
.slab .num { font-family: var(--mono); color: var(--accent); font-size: 0.78rem; letter-spacing: 0.1em; }
.slab h3 { font-size: 1.1rem; text-transform: uppercase; margin: 8px 0 10px; letter-spacing: 0.02em; }
.slab p { color: var(--sub); font-size: 0.95rem; margin: 0; }
@media (max-width: 820px) {
  .slabs-2, .slabs-3 { grid-template-columns: 1fr; }
  .slab { border-right: none; border-bottom: 3px solid var(--ink); }
  .slab:last-child { border-bottom: none; }
}

/* Panels (softer content blocks) */
.panel { background: var(--panel); border: 2px dashed var(--line); padding: 30px; }
.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 760px) { .grid-2 { grid-template-columns: 1fr; } }
.panel h3 { margin: 0 0 8px; text-transform: uppercase; font-size: 1rem; letter-spacing: 0.03em; }
.panel p { margin: 0; color: var(--sub); font-size: 0.96rem; }
.panel .tagline { font-family: var(--mono); font-size: 0.75rem; color: var(--accent);
                  letter-spacing: 0.12em; text-transform: uppercase; display: block; margin-bottom: 10px; }

/* Big statement (who-it's-for) */
.statement { font-size: clamp(1.35rem, 3vw, 2rem); font-weight: 700; line-height: 1.4; max-width: 880px; margin: 0; }
.statement mark { background: var(--accent); color: var(--accent-ink); padding: 0 8px; }

/* Tags */
.tag {
  display: inline-block; font-family: var(--mono); font-size: 0.7rem; font-weight: 600;
  letter-spacing: 0.06em; padding: 3px 10px; margin-left: 10px; vertical-align: middle;
  border: 1px dashed currentColor; text-transform: uppercase;
}
.tag-free { color: #34d399; }
.tag-pro { color: var(--accent); }
.tag-ent { color: #7db4ff; }
.tag-beta { color: #fbbf24; }

/* Notices */
.notice {
  border: 2px solid #fbbf24; background: rgba(251, 191, 36, 0.07);
  color: #fde9b8; padding: 16px 20px; font-size: 0.94rem; max-width: 660px; margin-top: 26px;
}
.notice strong { color: #fbbf24; }

/* Download box */
.download-box { text-align: center; padding: 46px 28px; }
.download-box .meta { color: var(--sub); font-size: 0.9rem; margin-top: 16px; font-family: var(--mono); }

/* Footer */
footer.site { border-top: 3px double var(--ink); margin-top: 30px; padding: 30px 0 44px;
              color: var(--sub); font-size: 0.85rem; }
footer.site .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
footer.site a { color: var(--sub); }
footer.site a:hover { color: var(--ink); }
footer .mono { font-family: var(--mono); text-transform: uppercase; letter-spacing: 0.1em; font-size: 0.72rem; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
}