:root{
  --paper:#f4f4f0; --paper2:#eae9e3; --ink:#111111; --ink-soft:rgba(17,17,17,.62);
  --line:rgba(17,17,17,.16); --line-strong:rgba(17,17,17,.4);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"IBM Plex Sans",Arial,sans-serif}
a{color:inherit;text-decoration:none}
button{font:inherit}

/* fine system grid, fixed behind everything */
.grid-bg{position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:40px 40px;opacity:.5}
main,header,footer{position:relative;z-index:1}

/* header */
.site-header{position:fixed;top:0;left:0;right:0;height:70px;z-index:100;background:var(--paper);border-bottom:1px solid var(--line-strong);display:flex;align-items:center;padding:0 4vw;gap:3vw}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{position:relative;display:block;width:34px;height:34px;border-radius:2px;overflow:hidden}
.brand-mark img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.brand-mark:hover .art-color,.brand-mark.touch-active .art-color{opacity:1}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-name{font:700 20px "Space Grotesk",sans-serif;letter-spacing:-.02em}
.brand-sub,.eyebrow{font:500 10px "IBM Plex Mono",monospace;letter-spacing:.1em;text-transform:uppercase}
.brand-sub{margin-top:4px;color:var(--ink-soft)}
.site-header nav{display:flex;gap:26px;margin-left:auto;font:500 11px "IBM Plex Mono",monospace;letter-spacing:.06em}
.site-header nav a{opacity:.7;transition:.15s}
.site-header nav a:hover{opacity:1;text-decoration:underline;text-underline-offset:3px}
.header-cta,.button{display:inline-flex;gap:16px;align-items:center;justify-content:center;background:var(--ink);color:var(--paper);padding:13px 20px;font:600 11px "IBM Plex Mono",monospace;letter-spacing:.08em;border:1px solid var(--ink);border-radius:0;transition:.15s;cursor:pointer}
.header-cta:hover,.button:hover{background:transparent;color:var(--ink)}
.header-cta{margin-left:16px}
.button.invert{background:var(--paper);color:var(--ink)}
.button.invert:hover{background:var(--ink);color:var(--paper)}

.status-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--ink);animation:pulse 2.4s infinite}
@keyframes pulse{0%{opacity:1}50%{opacity:.25}100%{opacity:1}}

.section-pad{padding-left:6vw;padding-right:6vw}

/* hero */
.hero{min-height:100vh;display:grid;grid-template-columns:46% 54%;align-items:center;gap:4vw;padding-top:110px;border-bottom:1px solid var(--line-strong)}
.hero-copy{max-width:560px}
.hero h1,.section-heading h2,.section-intro h2,.contact h2{font:700 clamp(38px,4.6vw,72px)/1.04 "Space Grotesk",sans-serif;letter-spacing:-.03em;margin:18px 0}
.hl{background:var(--ink);color:var(--paper);padding:0 8px}
.hero-lede{font:400 clamp(15px,1.2vw,18px)/1.55 "IBM Plex Sans",sans-serif;max-width:480px;color:var(--ink-soft)}

/* hero live-demo console */
.hero-demo{background:var(--paper2);border:1px solid var(--line-strong);padding:28px 30px}
.console-head{display:flex;justify-content:space-between;align-items:center;font:500 10px "IBM Plex Mono",monospace;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-soft);border-bottom:1px solid var(--line);padding-bottom:14px;margin-bottom:18px}
.status-tag{display:inline-flex;align-items:center;gap:6px}
.hero-demo h2{font:700 clamp(22px,2vw,28px)/1.15 "Space Grotesk",sans-serif;margin:0 0 10px}
.demo-promise{color:var(--ink);font-size:13.5px;line-height:1.6;margin:0 0 16px;padding-left:14px;border-left:2px solid var(--ink)}
.demo-promise em{font-style:normal;background:var(--ink);color:var(--paper);padding:0 6px}
.demo-instructions{color:var(--ink-soft);font-size:13.5px;line-height:1.6;margin:0 0 12px}
.demo-checklist{list-style:none;margin:0 0 20px;padding:0;display:grid;gap:7px;font-family:"IBM Plex Mono",monospace}
.demo-checklist li{color:var(--ink);font-size:12.5px;line-height:1.5;padding-left:18px;position:relative}
.demo-checklist li:before{content:'—';position:absolute;left:0;top:0;color:var(--ink-soft)}
#demoForm textarea{width:100%;background:var(--paper);border:1px solid var(--line-strong);color:var(--ink);padding:14px;font:14px/1.5 "IBM Plex Sans",sans-serif;border-radius:0;resize:vertical}
#demoForm textarea:focus{outline:none;border-color:var(--ink)}
#demoForm .button{width:100%;margin-top:14px}
.demo-note{color:var(--ink-soft);font:11.5px "IBM Plex Mono",monospace;margin:14px 0 0;text-align:center}
.demo-result{margin-top:24px;padding-top:22px;border-top:1px solid var(--line-strong)}
.demo-result-title{font:700 19px "Space Grotesk",sans-serif;margin:0 0 8px}
.demo-result p{color:var(--ink);font-size:14px;line-height:1.6;margin:0 0 6px}
.demo-result-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin:16px 0 12px}
.demo-result-note{color:var(--ink-soft);font:11.5px "IBM Plex Mono",monospace}
.demo-error{margin-top:18px;color:var(--ink);font:13px "IBM Plex Mono",monospace;background:var(--paper2);border:1px solid var(--line-strong);padding:12px 14px}
.text-link{display:inline-block;background:none;border:none;border-bottom:1px solid var(--line-strong);font:600 11px "IBM Plex Mono",monospace;letter-spacing:.04em;padding:0 0 4px;color:var(--ink);cursor:pointer}
.text-link:hover{border-color:var(--ink)}

/* onboarding — video walkthrough grid */
.onboarding{padding-top:100px;padding-bottom:70px;border-bottom:1px solid var(--line-strong)}
.onboarding .section-intro p:last-child{max-width:600px}
.video-grid{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--line-strong)}
.video-card{border-right:1px solid var(--line-strong);border-bottom:1px solid var(--line-strong);padding:0 0 22px;color:var(--ink)}
.video-card:nth-child(2n){border-right:0}
.video-card:nth-last-child(-n+2){border-bottom:0}
.video-embed{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--ink);margin-bottom:18px}
.video-embed iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.video-card .card-eyebrow{display:block;margin:0 20px 6px}
.video-card h3{font:700 19px "Space Grotesk",sans-serif;margin:0 20px 8px}
.video-card p{margin:0 20px;color:var(--ink-soft);font-size:13px;line-height:1.6}
.onboarding-credit{margin:28px 0 0;color:var(--ink-soft);font-size:13px;line-height:1.6}
.onboarding-credit a{color:var(--ink);border-bottom:1px solid var(--line-strong)}
.onboarding-credit a:hover{border-color:var(--ink)}

/* verticals — bordered numbered cards */
.verticals-section{padding-top:100px;padding-bottom:100px;border-bottom:1px solid var(--line-strong)}
.section-intro{max-width:640px;margin-bottom:50px}
.section-intro h2{margin-bottom:8px}
.section-intro p:last-child{color:var(--ink-soft);font-size:15px;line-height:1.7;margin:14px 0 0}
.verticals-grid-simple{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line-strong)}
.vertical-card-simple{border-right:1px solid var(--line-strong);display:flex;flex-direction:column}
.vertical-card-simple:last-child{border-right:0}
/* color-on-hover: .art-base is always grayscale; .art-color sits on top,
   masked to a band that follows the cursor's horizontal position (full
   color at the cursor, fading to transparent - i.e. back to the grayscale
   layer beneath - toward whichever side is farther away), and its opacity
   fades the whole effect in/out on enter/leave. --mx is set by script.js. */
.card-art{position:relative;aspect-ratio:4/3;overflow:hidden}
.card-art img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.art-base{filter:grayscale(1) contrast(1.05)}
.art-color{opacity:0;transition:opacity .35s ease;
  -webkit-mask-image:radial-gradient(ellipse 280px 100% at var(--mx,50%) 50%,#000 0%,transparent 100%);
  mask-image:radial-gradient(ellipse 280px 100% at var(--mx,50%) 50%,#000 0%,transparent 100%)}
.card-art:hover .art-color,.card-art.touch-active .art-color{opacity:1}
.card-body{padding:20px 18px 24px;flex:1;display:flex;flex-direction:column;gap:8px}
.card-eyebrow{font:500 9.5px "IBM Plex Mono",monospace;letter-spacing:.04em;color:var(--ink-soft)}
.card-body h3{font:700 22px "Space Grotesk",sans-serif;margin:0}
.card-body p{margin:0;color:var(--ink-soft);font-size:13.5px;line-height:1.6}

/* how it works */
.how{padding-top:100px;padding-bottom:100px;border-bottom:1px solid var(--line-strong)}
.section-heading{max-width:640px}
.section-heading h2{margin-bottom:8px}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid var(--line-strong);margin-top:50px}
.step{padding:30px 28px;border-right:1px solid var(--line-strong);position:relative}
.step:last-child{border-right:0}
.step-no{position:absolute;right:24px;top:28px;font:600 11px "IBM Plex Mono",monospace;color:var(--ink-soft)}
.step h3{font:700 24px "Space Grotesk",sans-serif;margin:10px 0}
.step p:last-child{color:var(--ink-soft);line-height:1.65;max-width:320px;font-size:13.5px}

/* the AI edge — orchestration/insight showcase */
.edge{padding-top:100px;padding-bottom:100px;background:var(--paper2);border-bottom:1px solid var(--line-strong)}
.edge .section-heading{max-width:680px;margin-bottom:44px}
.edge .section-heading p:last-child{color:var(--ink-soft);font-size:15px;line-height:1.7;margin:14px 0 0}
.insight-card{background:var(--paper);border:1px solid var(--line-strong);max-width:720px;padding:28px 30px}
.insight-setup{font:italic 15px "IBM Plex Sans",sans-serif;color:var(--ink);margin:0 0 20px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.insight-row{display:grid;grid-template-columns:130px 1fr;gap:18px;padding:14px 0;border-bottom:1px solid var(--line)}
.insight-row:last-child{border-bottom:0;padding-bottom:0}
.insight-tag{font:600 10.5px "IBM Plex Mono",monospace;letter-spacing:.06em;color:var(--ink-soft);padding-top:2px}
.insight-row p{margin:0;font-size:14px;line-height:1.6;color:var(--ink)}

/* faq */
.faq{padding-top:100px;padding-bottom:100px}
.faq-list{margin-top:40px;border-top:1px solid var(--line-strong);max-width:780px}
details{border-bottom:1px solid var(--line-strong)}
summary{list-style:none;cursor:pointer;padding:20px 0;font:500 17px "Space Grotesk",sans-serif;display:flex;align-items:baseline;gap:16px}
summary::-webkit-details-marker{display:none}
summary span:first-child{font:600 11px "IBM Plex Mono",monospace;color:var(--ink-soft)}
summary .toggle{margin-left:auto;font-family:"IBM Plex Mono",monospace;color:var(--ink-soft)}
details p{max-width:680px;color:var(--ink-soft);line-height:1.75;padding:0 0 24px 44px;font-size:14.5px}

/* contact — inverted */
.contact{background:var(--ink);color:var(--paper);padding-top:100px;padding-bottom:80px}
.contact .eyebrow{color:rgba(244,244,240,.6)}
.contact-inner{max-width:760px;margin:auto;text-align:center}
.contact h2{color:var(--paper)}
.contact-inner>p:not(.eyebrow){font:16px "IBM Plex Sans";color:rgba(244,244,240,.75);max-width:480px;margin:0 auto 30px}

footer.sys-bottom{display:flex;justify-content:space-between;align-items:center;padding:16px 6vw;background:var(--paper);border-top:1px solid var(--line-strong);color:var(--ink-soft);font:500 10.5px "IBM Plex Mono",monospace;letter-spacing:.05em}
.sys-bottom .status{display:flex;align-items:center;gap:8px;color:var(--ink)}
.sys-bottom a{color:var(--ink-soft);border-bottom:1px solid transparent}
.sys-bottom a:hover{color:var(--ink);border-color:var(--ink)}

.reveal{opacity:0;transform:translateY(20px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
.delayed{transition-delay:.12s}

@media(max-width:900px){
  .site-header{height:64px}
  .site-header nav{display:none}
  .header-cta{margin-left:auto}
  .hero{grid-template-columns:1fr;min-height:auto;padding-top:100px;padding-bottom:50px}
  .hero-demo{margin-top:20px;padding:22px 20px}
  .verticals-grid-simple{grid-template-columns:1fr 1fr}
  .vertical-card-simple:nth-child(2){border-right:0}
  .steps{grid-template-columns:1fr}
  .step{border-right:0;border-bottom:1px solid var(--line-strong)}
  .step:last-child{border-bottom:0}
  .sys-bottom{flex-direction:column;gap:6px;text-align:center}
}
@media(max-width:560px){
  .brand-name{font-size:17px}
  .header-cta{padding:11px 14px;font-size:9px}
  .hero h1{font-size:34px}
  .verticals-grid-simple{grid-template-columns:1fr}
  .vertical-card-simple{border-right:0;border-bottom:1px solid var(--line-strong)}
  .vertical-card-simple:last-child{border-bottom:0}
  .video-grid{grid-template-columns:1fr}
  .video-card{border-right:0}
  .video-card:nth-last-child(-n+2){border-bottom:1px solid var(--line-strong)}
  .video-card:last-child{border-bottom:0}
  .demo-result-actions{flex-direction:column;align-items:flex-start}
  .contact h2{font-size:34px}
  .insight-row{grid-template-columns:1fr;gap:4px}
  .insight-card{padding:22px 20px}
}