/* =========================================================
   Dorn Systems — Industrial PLC Rack Aesthetic
   Strictly CSS (no frameworks)
   ========================================================= */

:root {
  /* Industrial palette */
  --bg-0:        #0e1014;   /* deep panel */
  --bg-1:        #14181f;   /* panel */
  --bg-2:        #1a1f28;   /* card base */
  --bg-3:        #222834;   /* module face */
  --bg-4:        #2c3340;   /* raised */
  --rail:        #3a4251;   /* din rail */
  --line:        #2d3340;   /* hairlines */
  --line-soft:   #242a35;

  --ink-0:       #f5f7fb;   /* primary text */
  --ink-1:       #cbd2dd;   /* secondary */
  --ink-2:       #8b94a3;   /* tertiary */
  --ink-3:       #5d6676;   /* muted */

  --accent:      #ff8c1a;   /* safety orange */
  --accent-2:    #ffb25a;
  --cyan:        #00e5ff;   /* ai cyan */
  --green:       #00ff88;   /* RUN */
  --amber:       #ffc400;   /* forced */
  --red:         #ff3b3b;   /* fault */

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 10px;

  --shadow-sm: 0 2px 6px rgba(0,0,0,.35);
  --shadow-md: 0 10px 30px rgba(0,0,0,.55), 0 2px 0 rgba(255,255,255,.03) inset;
  --shadow-lg: 0 20px 60px rgba(0,0,0,.65), 0 1px 0 rgba(255,255,255,.05) inset;

  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --sans: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;

  --container: 1200px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink-1);
  background:
    radial-gradient(1200px 600px at 85% -10%, rgba(255,140,26,.07), transparent 60%),
    radial-gradient(1000px 500px at -10% 20%, rgba(0,229,255,.05), transparent 60%),
    var(--bg-0);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }

/* subtle diagonal brushed-metal background noise */
body::before {
  content:'';
  position: fixed; inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(115deg, rgba(255,255,255,.012) 0 1px, transparent 1px 3px),
    repeating-linear-gradient(25deg,  rgba(0,0,0,.10)      0 1px, transparent 1px 3px);
  mix-blend-mode: overlay;
  z-index: 0;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
  position: relative;
  z-index: 1;
}

/* =========================================================
   TYPOGRAPHY
   ========================================================= */
h1,h2,h3,h4 { color: var(--ink-0); font-weight: 700; letter-spacing: -0.01em; margin: 0 0 .4em; }
h1 { font-size: clamp(2rem, 4.5vw, 3.4rem); line-height: 1.08; }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); line-height: 1.15; }
h3 { font-size: 1.15rem; }
p  { margin: 0 0 1em; }
a  { color: var(--ink-0); text-decoration: none; }
a:hover { color: var(--accent-2); }

.text-accent { color: var(--accent); }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono);
  font-size: .72rem; letter-spacing: .22em; text-transform: uppercase;
  color: var(--ink-2);
  padding: 6px 10px;
  background: rgba(255,255,255,.02);
  border: 1px solid var(--line);
  border-radius: 999px;
  margin-bottom: 14px;
}
.eyebrow--accent { color: var(--cyan); border-color: rgba(0,229,255,.35); background: rgba(0,229,255,.05); }

/* =========================================================
   LEDs
   ========================================================= */
.led {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: #333;
  box-shadow: 0 0 0 1px rgba(0,0,0,.6) inset;
  position: relative;
}
.led--green { background: var(--green); box-shadow: 0 0 8px rgba(0,255,136,.7), 0 0 0 1px rgba(0,0,0,.6) inset; animation: blinkSoft 2.6s infinite; }
.led--amber { background: var(--amber); box-shadow: 0 0 8px rgba(255,196,0,.7),  0 0 0 1px rgba(0,0,0,.6) inset; animation: blinkSoft 1.6s infinite; }
.led--red   { background: var(--red);   box-shadow: 0 0 8px rgba(255,59,59,.65), 0 0 0 1px rgba(0,0,0,.6) inset; }
.led--cyan  { background: var(--cyan);  box-shadow: 0 0 8px rgba(0,229,255,.75), 0 0 0 1px rgba(0,0,0,.6) inset; animation: blinkSoft 1.8s infinite; }

@keyframes blinkSoft { 0%,70% {opacity:1} 85% {opacity:.35} 100% {opacity:1} }

/* =========================================================
   STATUS RAIL
   ========================================================= */
.status-rail {
  position: sticky; top: 0; z-index: 60;
  background: linear-gradient(180deg, #0a0c10 0%, #0e1117 100%);
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--ink-2);
}
.status-rail__inner {
  max-width: var(--container);
  margin-inline: auto;
  padding: 6px 24px;
  display: flex; gap: 18px; align-items: center;
  overflow-x: auto;
  scrollbar-width: none;
  white-space: nowrap;
}
.status-rail__inner::-webkit-scrollbar { display: none; }
.status-rail__chip {
  display: inline-flex; align-items: center; gap: 6px;
  letter-spacing: .1em; text-transform: uppercase;
}
.status-rail__chip strong { color: var(--ink-0); font-weight: 700; }
.status-rail__chip--mute { color: var(--ink-3); }

/* =========================================================
   HEADER
   ========================================================= */
.site-header {
  position: sticky; top: 28px; z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(14,16,20,.78);
  border-bottom: 1px solid var(--line);
}
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px;
  gap: 16px;
}

.brand { display: flex; align-items: center; gap: 12px; }
.brand:hover { color: inherit; }
.brand__mark {
  width: 42px; height: 42px; display: grid; place-items: center;
  background: var(--bg-2); border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}
.brand__text { display: flex; flex-direction: column; line-height: 1; }
.brand__name {
  font-family: var(--mono);
  font-weight: 800;
  letter-spacing: .14em;
  color: var(--ink-0);
  font-size: 1rem;
}
.brand__name-accent { color: var(--accent); margin-left: 2px; }
.brand__tag {
  font-family: var(--mono);
  font-size: .62rem; letter-spacing: .22em; text-transform: uppercase;
  color: var(--ink-3); margin-top: 5px;
}

/* primary nav */
.primary-nav {
  display: flex; align-items: center; gap: 10px;
}
.primary-nav__list {
  list-style: none; margin: 0; padding: 0;
  display: flex; gap: 4px;
}
.primary-nav__list a {
  display: inline-flex; align-items: center;
  font-family: var(--mono);
  font-size: .78rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--ink-1);
  padding: 9px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: background .2s, border-color .2s, color .2s;
}
.primary-nav__list a:hover,
.primary-nav__list a.is-active {
  background: rgba(255,140,26,.08);
  border-color: rgba(255,140,26,.3);
  color: var(--ink-0);
}
.primary-nav__cta { margin-left: 8px; }

/* nav toggle (mobile / collapsible) */
.nav-toggle {
  display: none;
  align-items: center; gap: 10px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  color: var(--ink-0);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: var(--mono);
  font-size: .72rem; letter-spacing: .18em; text-transform: uppercase;
  transition: border-color .2s, background .2s;
}
.nav-toggle:hover { border-color: var(--accent); }
.nav-toggle__bar {
  display: block; width: 18px; height: 2px;
  background: var(--accent);
  position: relative;
}
.nav-toggle__bar + .nav-toggle__bar { margin-top: 4px; }
.nav-toggle__label { margin-left: 6px; }

/* =========================================================
   BUTTONS
   ========================================================= */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 18px;
  font-family: var(--mono);
  font-size: .78rem; letter-spacing: .14em; text-transform: uppercase;
  font-weight: 700;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .12s, box-shadow .2s, background .2s, border-color .2s, color .2s;
  text-decoration: none;
  line-height: 1;
}
.btn:active { transform: translateY(1px); }
.btn--primary {
  background: linear-gradient(180deg, #ff9a33 0%, #ff7a00 100%);
  color: #181818;
  border-color: #c46200;
  box-shadow: 0 6px 18px rgba(255,140,26,.25), 0 1px 0 rgba(255,255,255,.3) inset;
}
.btn--primary:hover { box-shadow: 0 10px 26px rgba(255,140,26,.4), 0 1px 0 rgba(255,255,255,.4) inset; color:#000; }
.btn--ghost {
  background: transparent;
  color: var(--ink-0);
  border-color: var(--line);
}
.btn--ghost:hover { border-color: var(--accent); color: var(--accent-2); }
.btn--small { padding: 9px 14px; font-size: .7rem; }
.btn--full { width: 100%; }

.link-btn {
  background: none; border: 0; color: var(--accent);
  cursor: pointer; font: inherit; padding: 0; text-decoration: underline;
}

/* =========================================================
   HERO
   ========================================================= */
.hero {
  position: relative;
  padding: 64px 0 40px;
  overflow: hidden;
}
.hero__bg { position: absolute; inset: 0; z-index: 0; }
.hero__grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 50% 30%, #000 40%, transparent 75%);
}
.hero__glow {
  position: absolute;
  width: 600px; height: 600px;
  border-radius: 50%;
  filter: blur(90px);
  opacity: .5;
  pointer-events: none;
}
.hero__glow--1 { background: radial-gradient(circle, rgba(255,140,26,.55), transparent 60%); top: -200px; left: -180px; }
.hero__glow--2 { background: radial-gradient(circle, rgba(0,229,255,.35),  transparent 60%); bottom: -260px; right: -140px; }

.hero__inner {
  position: relative; z-index: 2;
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 40px 24px;
}
.hero__title .text-accent { background: linear-gradient(90deg, #ff8c1a, #ffd080); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero__lede { font-size: 1.08rem; color: var(--ink-1); max-width: 540px; }
.hero__actions { display: flex; gap: 12px; flex-wrap: wrap; margin: 18px 0 24px; }
.hero__stats {
  display: grid; grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 12px;
  margin: 24px 0 0; padding: 0;
  border-top: 1px solid var(--line);
  padding-top: 20px;
}
.hero__stat { margin: 0; }
.hero__stat dt { font-family: var(--mono); font-size: .65rem; letter-spacing: .2em; text-transform: uppercase; color: var(--ink-3); }
.hero__stat dd { margin: 4px 0 0; font-family: var(--mono); font-weight: 800; font-size: 1.8rem; color: var(--ink-0); }

/* =========================================================
   PLC RACK (hero visual)
   ========================================================= */
.rack {
  position: relative;
  background:
    repeating-linear-gradient(90deg, rgba(255,255,255,.02) 0 1px, transparent 1px 6px),
    linear-gradient(180deg, #1c212c 0%, #141821 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 20px 18px 24px;
  box-shadow: var(--shadow-lg);
}
.rack::after {
  /* corner screws */
  content:'';
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(circle at 12px 12px, #3b4150 0 3px, transparent 4px),
    radial-gradient(circle at calc(100% - 12px) 12px, #3b4150 0 3px, transparent 4px),
    radial-gradient(circle at 12px calc(100% - 12px), #3b4150 0 3px, transparent 4px),
    radial-gradient(circle at calc(100% - 12px) calc(100% - 12px), #3b4150 0 3px, transparent 4px);
}
.rack__rail {
  height: 8px;
  background: linear-gradient(180deg, #4b5668 0%, #2d3340 100%);
  border-radius: 3px;
  box-shadow: 0 2px 0 rgba(0,0,0,.6) inset, 0 -1px 0 rgba(255,255,255,.06) inset;
}
.rack__rail--top { margin-bottom: 10px; }
.rack__rail--bottom { margin-top: 10px; }
.rack__label {
  font-family: var(--mono);
  font-size: .65rem; letter-spacing: .22em; text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 4px 10px;
  display: flex; justify-content: space-between;
}

.rack__slots {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 6px;
}

.module {
  position: relative;
  background: linear-gradient(180deg, var(--bg-3) 0%, var(--bg-2) 100%);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 14px 8px 10px;
  min-height: 220px;
  display: flex; flex-direction: column;
  box-shadow: 0 1px 0 rgba(255,255,255,.04) inset, 0 2px 8px rgba(0,0,0,.5);
  overflow: hidden;
}
.module::before {
  /* vertical vent lines */
  content:'';
  position: absolute; inset: auto 10px 40px 10px; height: 80px;
  background: repeating-linear-gradient(0deg, rgba(0,0,0,.5) 0 1px, transparent 1px 4px);
  opacity: .6;
  border-radius: 2px;
}
.module__screws {
  position: absolute; inset: 4px 4px auto 4px;
  display: flex; justify-content: space-between;
}
.module__screws span {
  width: 6px; height: 6px; border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #5a6274, #1a1d24 70%);
  box-shadow: 0 0 0 1px rgba(0,0,0,.5);
}
.module__tag {
  align-self: flex-start;
  margin-top: 8px;
  font-family: var(--mono); font-weight: 800;
  font-size: .62rem; letter-spacing: .2em;
  color: var(--ink-0);
  background: rgba(255,255,255,.04);
  border: 1px solid var(--line);
  padding: 3px 6px; border-radius: 2px;
}
.module__tag--accent { color: var(--cyan); border-color: rgba(0,229,255,.4); background: rgba(0,229,255,.08); }
.module__leds { display: flex; gap: 6px; margin: 10px 0; position: relative; z-index: 2; }
.module__label {
  margin-top: auto;
  font-family: var(--mono); font-size: .56rem; letter-spacing: .18em; text-transform: uppercase;
  color: var(--ink-3);
  text-align: center;
  border-top: 1px dashed var(--line);
  padding-top: 6px;
}
.module__display {
  margin-top: 6px;
  background: #0a0e15;
  border: 1px solid #000;
  border-radius: 2px;
  padding: 6px 8px;
  font-family: var(--mono); font-weight: 800; font-size: .75rem;
  color: var(--green);
  text-shadow: 0 0 6px rgba(0,255,136,.6);
  letter-spacing: .1em;
  text-align: center;
  position: relative; z-index: 2;
}
.module__display--wave { padding: 4px; color: var(--cyan); }
.module__display--wave svg { width: 100%; height: 20px; }
.module__io-grid {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 4px;
  margin-top: 6px;
}
.module__io-grid span {
  height: 10px; border-radius: 2px;
  background: #0a0e15;
  border: 1px solid #000;
  box-shadow: inset 0 0 3px rgba(0,0,0,.8);
}
.module__io-grid span.on {
  background: radial-gradient(circle, #ffd180 0%, #ff8c1a 80%);
  box-shadow: 0 0 8px rgba(255,140,26,.8), inset 0 0 3px rgba(255,255,255,.4);
}
.module__ports { display: flex; gap: 8px; margin-top: 8px; position: relative; z-index: 2; justify-content: center; }
.port {
  width: 20px; height: 14px; border-radius: 2px;
  background: linear-gradient(180deg, #0a0e15, #1a1f28);
  border: 1px solid #000;
  box-shadow: inset 0 -4px 4px rgba(0,0,0,.6);
  position: relative;
}
.port::after {
  content:''; position:absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 10px; height: 6px; background:#000; border-radius: 1px;
}
.port--active { box-shadow: inset 0 -4px 4px rgba(0,0,0,.6), 0 0 8px rgba(0,255,136,.5); }
.port--active::before {
  content:''; position: absolute; bottom: -3px; left: 50%; transform: translateX(-50%);
  width: 4px; height: 4px; border-radius: 50%;
  background: var(--green); box-shadow: 0 0 6px var(--green);
}

/* =========================================================
   MARQUEE
   ========================================================= */
.marquee {
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #0a0c10;
  margin-top: 40px;
}
.marquee__track {
  display: flex; gap: 40px; align-items: center;
  padding: 14px 0;
  white-space: nowrap;
  animation: marquee 45s linear infinite;
  font-family: var(--mono);
  font-size: .72rem; letter-spacing: .2em; color: var(--ink-3);
}
.marquee__track span { flex-shrink: 0; }
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* =========================================================
   GENERIC SECTION
   ========================================================= */
.section { padding: 96px 0; position: relative; }
.section__head { max-width: 780px; margin: 0 auto 56px; text-align: center; }
.section__title { font-size: clamp(1.8rem, 3vw, 2.4rem); }
.section__lede { color: var(--ink-1); font-size: 1.05rem; }

/* reveal-on-scroll */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

/* =========================================================
   ABOUT
   ========================================================= */
.section--about { background: linear-gradient(180deg, transparent 0%, rgba(255,255,255,.015) 50%, transparent 100%); }
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}
.info-card {
  position: relative;
  background: linear-gradient(180deg, var(--bg-2) 0%, var(--bg-1) 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-md);
  transition: transform .25s, border-color .25s, box-shadow .25s;
}
.info-card::before {
  content:''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent 70%);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}
.info-card:hover { transform: translateY(-4px); border-color: rgba(255,140,26,.4); box-shadow: 0 20px 40px rgba(0,0,0,.7); }
.info-card__icon {
  width: 44px; height: 44px; display: grid; place-items: center;
  background: rgba(255,140,26,.08);
  color: var(--accent);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,140,26,.2);
  margin-bottom: 14px;
}
.info-card p { color: var(--ink-2); font-size: .95rem; margin: 0; }

/* =========================================================
   CAPABILITIES
   ========================================================= */
.caps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
}
.cap-card {
  position: relative;
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  box-shadow: var(--shadow-md);
  transition: transform .25s, border-color .25s, box-shadow .25s;
}
.cap-card:hover { transform: translateY(-4px); border-color: rgba(255,140,26,.4); box-shadow: 0 20px 40px rgba(0,0,0,.7); }
.cap-card__num {
  font-family: var(--mono); font-size: .78rem; letter-spacing: .2em;
  color: var(--accent);
  display: inline-block; margin-bottom: 10px;
}
.cap-card p { color: var(--ink-2); margin: 0 0 14px; font-size: .95rem; }
.cap-card__tags {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: 6px;
}
.cap-card__tags li {
  font-family: var(--mono); font-size: .65rem; letter-spacing: .15em; text-transform: uppercase;
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: 2px;
  color: var(--ink-2);
  background: rgba(255,255,255,.02);
}

/* =========================================================
   AI + PLC
   ========================================================= */
.section--ai {
  background:
    radial-gradient(800px 400px at 80% 0%, rgba(0,229,255,.08), transparent 60%),
    radial-gradient(600px 400px at 10% 100%, rgba(255,140,26,.06), transparent 60%);
}
.ai-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 18px;
  margin-bottom: 56px;
}
.ai-card {
  background: linear-gradient(180deg, #171c25 0%, #12161d 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 24px;
  position: relative;
  transition: transform .25s, border-color .25s, box-shadow .25s;
  box-shadow: var(--shadow-md);
}
.ai-card::before {
  content:''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--cyan), transparent 70%);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}
.ai-card:hover { transform: translateY(-4px); border-color: rgba(0,229,255,.35); box-shadow: 0 20px 40px rgba(0,0,0,.7); }
.ai-card__head { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.ai-card__head h3 { margin: 0; }
.ai-card__chip {
  font-family: var(--mono); font-weight: 800; font-size: .68rem; letter-spacing: .2em;
  padding: 5px 8px; border-radius: 2px;
  color: var(--cyan);
  background: rgba(0,229,255,.08);
  border: 1px solid rgba(0,229,255,.3);
}
.ai-card p { color: var(--ink-2); font-size: .95rem; }

.code-block {
  margin: 12px 0 0;
  padding: 14px 16px;
  background: #090b10;
  border: 1px solid #000;
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius-sm);
  color: var(--ink-1);
  font-family: var(--mono);
  font-size: .78rem;
  line-height: 1.55;
  overflow-x: auto;
  white-space: pre;
}
.c-comment { color: #6b7280; font-style: italic; }
.c-kw { color: var(--accent-2); font-weight: 700; }
.c-val { color: var(--cyan); }

.bullets { list-style: none; padding: 0; margin: 10px 0 0; }
.bullets li { padding: 6px 0; color: var(--ink-1); display: flex; align-items: center; gap: 10px; }
.dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 6px rgba(255,140,26,.6); flex-shrink: 0; }

.keystrokes { display: flex; align-items: center; gap: 8px; margin-top: 14px; flex-wrap: wrap; }
.key {
  font-family: var(--mono); font-weight: 700; font-size: .75rem;
  padding: 6px 10px;
  color: var(--ink-0);
  background: linear-gradient(180deg, #2a303c 0%, #1a1f28 100%);
  border: 1px solid #000;
  border-radius: 4px;
  box-shadow: 0 2px 0 #000, inset 0 1px 0 rgba(255,255,255,.08);
}
.key-sep { color: var(--ink-3); }
.key-caption { font-family: var(--mono); font-size: .7rem; color: var(--ink-2); letter-spacing: .1em; text-transform: uppercase; }

/* Workflow timeline */
.ai-process {
  background: linear-gradient(180deg, #171c25 0%, #12161d 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-md);
}
.ai-process__title { text-align: center; margin-bottom: 24px; }
.ai-process__steps {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  position: relative;
}
.ai-process__steps li {
  position: relative;
  padding: 18px;
  background: rgba(255,255,255,.02);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}
.ai-process__steps li h4 { margin: 8px 0 6px; font-size: 1rem; }
.ai-process__steps li p { color: var(--ink-2); font-size: .88rem; margin: 0; }
.step__num {
  font-family: var(--mono); font-weight: 800; font-size: .7rem; letter-spacing: .2em;
  color: var(--accent);
  padding: 4px 6px; border: 1px solid rgba(255,140,26,.3);
  border-radius: 2px;
  background: rgba(255,140,26,.05);
  display: inline-block;
}

/* =========================================================
   SEMINARS
   ========================================================= */
.section--seminars { background: linear-gradient(180deg, transparent 0%, rgba(0,0,0,.3) 50%, transparent 100%); }

.seminar-filter {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-bottom: 32px; justify-content: center;
}
.chip {
  font-family: var(--mono); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase;
  padding: 9px 14px;
  border-radius: 999px;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink-1);
  cursor: pointer;
  transition: all .2s;
}
.chip:hover { border-color: var(--accent); color: var(--accent-2); }
.chip--active { background: rgba(255,140,26,.12); border-color: var(--accent); color: var(--ink-0); }

.seminars { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }

.seminar {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 24px;
  padding: 22px;
  background: linear-gradient(180deg, var(--bg-2) 0%, var(--bg-1) 100%);
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  transition: transform .25s, border-color .25s, box-shadow .25s;
}
.seminar:hover { transform: translateX(2px); box-shadow: 0 20px 40px rgba(0,0,0,.6); }
.seminar[data-topic="gen"] { border-left-color: var(--accent); }
.seminar[data-topic="re"]  { border-left-color: var(--cyan); }
.seminar[data-topic="fb"]  { border-left-color: var(--green); }
.seminar[data-topic="ac"]  { border-left-color: var(--amber); }

.seminar__date {
  display: flex; flex-direction: column; justify-content: center; align-items: center;
  text-align: center;
  padding: 16px 6px;
  background: #0a0c10;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.02);
}
.seminar__month { font-family: var(--mono); font-size: .72rem; letter-spacing: .22em; color: var(--accent); }
.seminar__day { font-family: var(--mono); font-weight: 800; font-size: 2.4rem; line-height: 1; color: var(--ink-0); margin: 2px 0; }
.seminar__year { font-family: var(--mono); font-size: .7rem; letter-spacing: .18em; color: var(--ink-3); }

.seminar__body h3 { margin: 6px 0 8px; }
.seminar__body p  { color: var(--ink-2); font-size: .95rem; margin: 0 0 12px; }
.seminar__meta { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.seminar__loc { font-family: var(--mono); font-size: .7rem; letter-spacing: .1em; color: var(--ink-3); text-transform: uppercase; }
.seminar__time { font-family: var(--mono); font-size: .78rem; color: var(--ink-1); }
.seminar__foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

.tag {
  font-family: var(--mono); font-weight: 700; font-size: .66rem; letter-spacing: .18em; text-transform: uppercase;
  padding: 4px 8px;
  border-radius: 2px;
  border: 1px solid;
  background: rgba(255,255,255,.02);
}
.tag--gen { color: var(--accent); border-color: rgba(255,140,26,.4); }
.tag--re  { color: var(--cyan);   border-color: rgba(0,229,255,.4); }
.tag--fb  { color: var(--green);  border-color: rgba(0,255,136,.4); }
.tag--ac  { color: var(--amber);  border-color: rgba(255,196,0,.4); }

.seminars__empty { text-align: center; padding: 32px; color: var(--ink-2); }

/* =========================================================
   CONTACT
   ========================================================= */
.contact__inner {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start;
}
.contact-details { list-style: none; margin: 18px 0 0; padding: 0; display: grid; gap: 12px; }
.contact-details li { display: flex; align-items: center; gap: 10px; color: var(--ink-1); }
.contact-details svg { color: var(--accent); flex-shrink: 0; }
.contact-details a:hover { color: var(--accent-2); }

.contact-form {
  background: linear-gradient(180deg, var(--bg-2) 0%, var(--bg-1) 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 24px;
  display: grid; gap: 14px;
  box-shadow: var(--shadow-md);
}
.contact-form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.contact-form label { display: grid; gap: 6px; font-family: var(--mono); font-size: .7rem; letter-spacing: .18em; text-transform: uppercase; color: var(--ink-2); }
.contact-form input, .contact-form select, .contact-form textarea {
  font-family: var(--sans);
  font-size: .95rem;
  color: var(--ink-0);
  background: #0a0c10;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 11px 12px;
  resize: vertical;
  transition: border-color .15s, box-shadow .15s;
  letter-spacing: 0;
  text-transform: none;
}
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255,140,26,.15);
}
.contact-form__note { margin: 0; font-family: var(--mono); font-size: .75rem; color: var(--ink-2); min-height: 1em; }
.contact-form__note.is-success { color: var(--green); }
.contact-form__note.is-error   { color: var(--red); }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer {
  background: #0a0c10;
  border-top: 1px solid var(--line);
  color: var(--ink-2);
}
.site-footer__inner {
  display: grid; grid-template-columns: 1.5fr 2fr; gap: 48px;
  padding: 56px 24px 32px;
}
.site-footer__brand p { margin: 10px 0 0; color: var(--ink-3); max-width: 420px; }
.site-footer__cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.site-footer__cols h4 { font-family: var(--mono); font-size: .72rem; letter-spacing: .2em; text-transform: uppercase; color: var(--ink-0); margin-bottom: 10px; }
.site-footer__cols ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.site-footer__cols a { color: var(--ink-2); font-size: .9rem; }
.site-footer__cols a:hover { color: var(--accent-2); }
.site-footer__bottom { border-top: 1px solid var(--line); }
.site-footer__bottom-inner { display: flex; justify-content: space-between; align-items: center; padding: 16px 24px; font-family: var(--mono); font-size: .72rem; color: var(--ink-3); letter-spacing: .14em; text-transform: uppercase; flex-wrap: wrap; gap: 10px; }

/* =========================================================
   MODAL
   ========================================================= */
.modal { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; padding: 20px; }
.modal[hidden] { display: none; }
.modal__backdrop { position: absolute; inset: 0; background: rgba(0,0,0,.7); backdrop-filter: blur(4px); }
.modal__dialog {
  position: relative; z-index: 1;
  width: min(480px, 100%);
  background: linear-gradient(180deg, var(--bg-2) 0%, var(--bg-1) 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-lg);
  animation: modalIn .22s ease-out;
}
@keyframes modalIn { from { opacity: 0; transform: translateY(16px) scale(.98); } to { opacity: 1; transform: none; } }
.modal__close { position: absolute; top: 10px; right: 12px; background: none; border: 0; color: var(--ink-2); font-size: 1.6rem; cursor: pointer; line-height: 1; }
.modal__close:hover { color: var(--accent); }
.modal__sub { font-family: var(--mono); font-size: .75rem; color: var(--ink-2); letter-spacing: .1em; margin: 0 0 16px; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 960px) {
  .hero__inner { grid-template-columns: 1fr; gap: 32px; padding: 20px 24px; }
  .rack__slots { grid-template-columns: repeat(3, 1fr); }
  .contact__inner { grid-template-columns: 1fr; gap: 28px; }
  .site-footer__inner { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 820px) {
  .nav-toggle { display: inline-flex; }
  .primary-nav {
    position: fixed; top: 0; right: 0;
    height: 100vh; width: min(340px, 86vw);
    background: #0e1117;
    border-left: 1px solid var(--line);
    padding: 96px 24px 24px;
    flex-direction: column;
    align-items: stretch;
    gap: 16px;
    transform: translateX(100%);
    transition: transform .3s ease;
    z-index: 45;
    box-shadow: -20px 0 60px rgba(0,0,0,.6);
  }
  .primary-nav.is-open { transform: none; }
  .primary-nav__list { flex-direction: column; gap: 4px; }
  .primary-nav__list a { width: 100%; padding: 12px 14px; }
  .primary-nav__cta { width: 100%; justify-content: center; }

  /* overlay */
  .nav-overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,.55);
    opacity: 0; pointer-events: none;
    transition: opacity .3s; z-index: 40;
  }
  .nav-overlay.is-open { opacity: 1; pointer-events: auto; }
}

@media (max-width: 600px) {
  .section { padding: 72px 0; }
  .seminar { grid-template-columns: 1fr; gap: 14px; }
  .seminar__date { flex-direction: row; gap: 10px; padding: 10px; }
  .seminar__day { font-size: 1.4rem; }
  .contact-form__row { grid-template-columns: 1fr; }
  .hero__stats { grid-template-columns: repeat(3, 1fr); }
  .hero__stat dd { font-size: 1.3rem; }
  .rack__slots { grid-template-columns: repeat(2, 1fr); }
  .module { min-height: 180px; }
  .site-footer__cols { grid-template-columns: 1fr 1fr; }
  .site-footer__bottom-inner { flex-direction: column; align-items: flex-start; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .marquee__track, .led { animation: none !important; }
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}