/* ============================================================
   TechEffectFL — design system
   ============================================================ */
:root{
  --bg:#0a1628;
  --bg-1:#0c1a2e;
  --bg-2:#102338;
  --bg-3:#142a44;
  --panel:rgba(18,38,62,.72);
  --line:rgba(120,160,200,.14);
  --line-2:rgba(120,160,200,.22);
  --grid:rgba(110,150,195,.06);

  --cyan:#22d3ee;
  --cyan-soft:#67e3f3;
  --cyan-deep:#0e9fc0;
  --blue:#2f7df0;

  --text:#f3f8fc;
  --muted:#9fb4ca;
  --muted-2:#6c819a;

  --ok:#34d399;
  --warn:#fbbf24;
  --alert:#fb7185;

  --maxw:1200px;
  --r-sm:8px;
  --r:14px;
  --r-lg:22px;

  --f-display:"Space Grotesk",system-ui,sans-serif;
  --f-body:"IBM Plex Sans",system-ui,sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,monospace;

  --shadow:0 30px 80px -30px rgba(0,0,0,.7);
  --glow:0 0 0 1px rgba(34,211,238,.25), 0 18px 60px -18px rgba(34,211,238,.4);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--f-body);
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  line-height:1.55;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;inset:0;
  background-image:
    linear-gradient(var(--grid) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:54px 54px;
  -webkit-mask-image:radial-gradient(circle at 50% 0,rgba(0,0,0,.9),transparent 78%);
  mask-image:radial-gradient(circle at 50% 0,rgba(0,0,0,.9),transparent 78%);
  pointer-events:none;z-index:0;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3,h4{font-family:var(--f-display);font-weight:600;line-height:1.08;margin:0;letter-spacing:-.02em}
p{margin:0}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px;position:relative;z-index:1}
.section{padding:120px 0;position:relative}
.eyebrow{
  font-family:var(--f-mono);font-size:12.5px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--cyan);display:inline-flex;align-items:center;gap:9px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--cyan),transparent)}
.section-head{max-width:680px;margin-bottom:56px}
.section-head h2{font-size:clamp(30px,4vw,46px);margin:18px 0 16px}
.section-head p{color:var(--muted);font-size:18px}

/* ---------- buttons ---------- */
.btn{
  font-family:var(--f-body);font-weight:600;font-size:15px;
  display:inline-flex;align-items:center;gap:9px;
  padding:13px 22px;border-radius:999px;cursor:pointer;border:1px solid transparent;
  transition:transform .18s ease,box-shadow .25s ease,background .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn svg{width:16px;height:16px}
.btn-primary{background:linear-gradient(120deg,var(--cyan),var(--cyan-deep));color:#04121b;box-shadow:0 10px 30px -8px rgba(34,211,238,.5)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 40px -8px rgba(34,211,238,.7)}
.btn-ghost{background:rgba(255,255,255,.03);border-color:var(--line-2);color:var(--text)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-2px)}

/* ---------- nav ---------- */
header.nav{position:fixed;top:0;left:0;right:0;z-index:50;transition:background .3s,border-color .3s,backdrop-filter .3s}
header.nav.scrolled{background:rgba(8,18,32,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;height:74px}
.brand{display:flex;align-items:center;gap:12px;font-family:var(--f-display);font-weight:600;font-size:19px;letter-spacing:-.01em;flex-shrink:0}
.brand .logo{width:38px;height:38px;filter:drop-shadow(0 0 12px rgba(34,211,238,.55))}
.brand b{color:var(--cyan);font-weight:600}
.nav-links{display:flex;align-items:center;gap:34px}
.nav-links a{font-size:15px;color:var(--muted);transition:color .2s;position:relative}
.nav-links a:hover{color:var(--text)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-6px;height:1px;width:0;background:var(--cyan);transition:width .25s}
.nav-links a:hover::after{width:100%}
.nav-cta{display:flex;align-items:center;gap:14px;flex-shrink:0}
.menu-btn{display:none;background:none;border:1px solid var(--line-2);border-radius:10px;color:var(--text);width:42px;height:42px;cursor:pointer}

/* ---------- hero ---------- */
.hero{padding:150px 0 100px;position:relative}
.hero-glow{position:absolute;top:-10%;right:-5%;width:780px;height:780px;border-radius:50%;
  background:radial-gradient(circle,rgba(34,211,238,.16),transparent 62%);filter:blur(10px);pointer-events:none;z-index:0}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
.hero h1{font-size:clamp(38px,5.4vw,66px);margin:22px 0 24px}
.hero h1 .grad{background:linear-gradient(110deg,var(--cyan),var(--cyan-soft) 55%,#bfeefb);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:19.5px;color:var(--muted);max-width:560px;margin-bottom:34px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.hero-trust{display:flex;gap:26px;margin-top:42px;flex-wrap:wrap;color:var(--muted-2);font-family:var(--f-mono);font-size:12.5px;letter-spacing:.04em}
.hero-trust span{display:flex;align-items:center;gap:8px}
.hero-trust .dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 8px var(--cyan)}

/* ---------- dashboard panel ---------- */
.panel{
  background:linear-gradient(160deg,rgba(20,42,68,.92),rgba(11,26,46,.92));
  border:1px solid var(--line-2);border-radius:var(--r-lg);padding:20px;
  box-shadow:var(--shadow);position:relative;overflow:hidden;
}
.panel::after{content:"";position:absolute;inset:0;border-radius:inherit;border:1px solid rgba(34,211,238,.08);pointer-events:none}
.panel-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.panel-title{display:flex;align-items:center;gap:10px;font-family:var(--f-mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.live{display:inline-flex;align-items:center;gap:7px;font-family:var(--f-mono);font-size:11px;color:var(--ok);letter-spacing:.1em}
.live .pulse{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 0 rgba(52,211,153,.6);animation:pulse 2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(52,211,153,.55)}70%{box-shadow:0 0 0 9px rgba(52,211,153,0)}100%{box-shadow:0 0 0 0 rgba(52,211,153,0)}}

.kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:14px}
.kpi{background:rgba(8,18,32,.6);border:1px solid var(--line);border-radius:var(--r-sm);padding:12px 13px}
.kpi .label{font-family:var(--f-mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted-2)}
.kpi .val{font-family:var(--f-display);font-size:25px;font-weight:600;margin-top:5px;display:flex;align-items:baseline;gap:5px}
.kpi .val small{font-size:12px;color:var(--muted);font-family:var(--f-mono)}
.kpi .trend{font-family:var(--f-mono);font-size:11px;margin-top:3px}
.trend.up{color:var(--ok)} .trend.down{color:var(--alert)} .trend.flat{color:var(--muted)}

.chart-box{background:rgba(8,18,32,.55);border:1px solid var(--line);border-radius:var(--r-sm);padding:14px 14px 6px}
.chart-box .cap{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px;font-family:var(--f-mono);font-size:11px;color:var(--muted)}
.chart-box .cap b{color:var(--text);font-weight:500}
.heat{display:flex;gap:3px;margin-top:12px}
.heat i{flex:1;height:22px;border-radius:3px;background:var(--bg-3)}

/* ---------- services ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.svc{
  background:linear-gradient(165deg,rgba(16,35,56,.7),rgba(10,22,40,.7));
  border:1px solid var(--line);border-radius:var(--r);padding:26px;position:relative;overflow:hidden;
  transition:border-color .3s,transform .3s,box-shadow .3s;
}
.svc::before{content:"";position:absolute;inset:0;background:radial-gradient(420px circle at var(--mx,50%) var(--my,0%),rgba(34,211,238,.09),transparent 60%);opacity:0;transition:opacity .3s}
.svc:hover{border-color:var(--line-2);transform:translateY(-4px);box-shadow:0 24px 50px -28px rgba(0,0,0,.8)}
.svc:hover::before{opacity:1}
.svc .num{font-family:var(--f-mono);font-size:12px;color:var(--cyan);letter-spacing:.1em}
.svc h3{font-size:23px;margin:16px 0 10px}
.svc p{color:var(--muted);font-size:15.5px;margin-bottom:18px}
.svc .viz{height:70px;margin-bottom:6px}
.svc ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.svc ul li{font-family:var(--f-mono);font-size:11.5px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:5px 11px}

/* ---------- approach pipeline ---------- */
.pipe{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;position:relative}
.step{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r);padding:22px 18px;position:relative;transition:border-color .3s,transform .3s}
.step:hover{border-color:var(--cyan);transform:translateY(-4px)}
.step .si{width:40px;height:40px;border-radius:11px;display:grid;place-items:center;background:rgba(34,211,238,.1);border:1px solid rgba(34,211,238,.25);color:var(--cyan);font-family:var(--f-mono);font-size:15px;margin-bottom:16px}
.step h4{font-size:17px;margin-bottom:8px}
.step p{font-size:13.5px;color:var(--muted)}
.step .arrow{position:absolute;right:-12px;top:38px;color:var(--line-2);z-index:2}
.step:last-child .arrow{display:none}

/* ---------- results ---------- */
.results-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.case{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;transition:border-color .3s,transform .3s}
.case:hover{border-color:var(--line-2);transform:translateY(-4px)}
.case .cv{height:124px;border-bottom:1px solid var(--line);position:relative;background:rgba(8,18,32,.5)}
.case .body{padding:22px;display:flex;flex-direction:column;gap:14px;flex:1}
.case .tag{font-family:var(--f-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--cyan)}
.case h3{font-size:19px}
.case p{font-size:14.5px;color:var(--muted)}
.case .metrics{display:flex;gap:22px;margin-top:auto;padding-top:8px;border-top:1px solid var(--line)}
.case .metrics div{display:flex;flex-direction:column}
.case .metrics .m{font-family:var(--f-display);font-size:24px;font-weight:600;color:var(--text)}
.case .metrics .l{font-family:var(--f-mono);font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted-2)}

/* ---------- about ---------- */
.about-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:54px;align-items:center}
.portrait{aspect-ratio:4/5;border-radius:var(--r-lg);border:1px solid var(--line-2);position:relative;overflow:hidden;
  background:repeating-linear-gradient(135deg,rgba(34,211,238,.05) 0 12px,transparent 12px 24px),linear-gradient(160deg,var(--bg-3),var(--bg-1))}
.portrait .ph{position:absolute;inset:0;display:grid;place-content:center;text-align:center;gap:6px;font-family:var(--f-mono);font-size:12px;color:var(--muted-2);letter-spacing:.05em}
.portrait .ph b{color:var(--muted);font-size:13px}
.portrait{aspect-ratio:4/5;border-radius:var(--r-lg);border:1px solid var(--line-2);position:relative;overflow:hidden;
  background:repeating-linear-gradient(135deg,rgba(34,211,238,.05) 0 12px,transparent 12px 24px),linear-gradient(160deg,var(--bg-3),var(--bg-1))}

.portrait img{
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:center top;
}
.about h2{font-size:clamp(28px,3.6vw,40px);margin:18px 0 20px}
.about .body p{color:var(--muted);font-size:17px;margin-bottom:18px}
.about .sig{display:flex;align-items:center;gap:14px;margin-top:26px;padding-top:24px;border-top:1px solid var(--line)}
.about .sig .nm{font-family:var(--f-display);font-weight:600;font-size:17px}
.about .sig .rl{font-family:var(--f-mono);font-size:12px;color:var(--cyan);letter-spacing:.05em}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.chips span{font-family:var(--f-mono);font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:8px;padding:7px 13px;background:rgba(8,18,32,.4)}

/* ---------- contact ---------- */
.contact{background:linear-gradient(180deg,transparent,rgba(10,22,40,.6));border-top:1px solid var(--line)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.contact-info h2{font-size:clamp(30px,4vw,44px);margin:18px 0 18px}
.contact-info p{color:var(--muted);font-size:18px;max-width:440px}
.contact-list{margin-top:36px;display:flex;flex-direction:column;gap:4px}
.cline{display:flex;align-items:center;gap:16px;padding:18px 0;border-top:1px solid var(--line)}
.cline .ic{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:rgba(34,211,238,.09);border:1px solid rgba(34,211,238,.22);color:var(--cyan);flex:none}
.cline .ic svg{width:20px;height:20px}
.cline .lab{font-family:var(--f-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted-2)}
.cline .val{font-size:17px;font-weight:500}
.cline a.val:hover{color:var(--cyan)}

form.card{background:var(--bg-2);border:1px solid var(--line-2);border-radius:var(--r-lg);padding:32px;box-shadow:var(--shadow)}
.field{margin-bottom:18px}
.field label{display:block;font-family:var(--f-mono);font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;background:rgba(8,18,32,.6);border:1px solid var(--line-2);border-radius:10px;
  color:var(--text);font-family:var(--f-body);font-size:15px;padding:13px 14px;transition:border-color .2s,box-shadow .2s;
}
.field textarea{resize:vertical;min-height:104px}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(34,211,238,.15)}
.field input::placeholder,.field textarea::placeholder{color:var(--muted-2)}
.two{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:6px}
.form-foot .note{font-family:var(--f-mono);font-size:11.5px;color:var(--muted-2)}
.form-msg{display:none;align-items:center;gap:12px;background:rgba(52,211,153,.08);border:1px solid rgba(52,211,153,.3);border-radius:12px;padding:18px;color:var(--text);font-size:15px}
.form-msg.show{display:flex}
.form-msg .ic{width:30px;height:30px;border-radius:50%;background:var(--ok);color:#04121b;display:grid;place-items:center;flex:none}

/* ---------- resources / see for yourself ---------- */
.demo{margin-bottom:40px}
.browser{border:1px solid var(--line-2);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow);background:#0a1626}
.browser-bar{display:flex;align-items:center;gap:14px;padding:13px 16px;background:rgba(8,18,32,.85);border-bottom:1px solid var(--line)}
.browser-bar .dots{display:flex;gap:7px}
.browser-bar .dots i{width:11px;height:11px;border-radius:50%;background:var(--bg-3)}
.browser-bar .dots i:nth-child(1){background:#fb7185}.browser-bar .dots i:nth-child(2){background:#fbbf24}.browser-bar .dots i:nth-child(3){background:#34d399}
.browser-bar .url{flex:1;display:flex;align-items:center;gap:9px;background:rgba(8,18,32,.7);border:1px solid var(--line);border-radius:8px;padding:7px 13px;font-family:var(--f-mono);font-size:12.5px;color:var(--muted)}
.browser-bar .url svg{width:13px;height:13px;color:var(--ok);flex:none}
.browser-bar .tag-g{font-family:var(--f-mono);font-size:11px;letter-spacing:.08em;color:var(--cyan);border:1px solid rgba(34,211,238,.3);border-radius:6px;padding:4px 9px}
.demo-body{padding:20px;background:linear-gradient(160deg,#0c1d33,#0a1626);position:relative}
.demo-row{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:14px}
.gstat{background:rgba(8,18,32,.6);border:1px solid var(--line);border-radius:var(--r-sm);padding:13px 15px}
.gstat .label{font-family:var(--f-mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted-2)}
.gstat .val{font-family:var(--f-display);font-size:27px;font-weight:600;margin-top:5px;display:flex;align-items:baseline;gap:4px}
.gstat .val small{font-size:12px;color:var(--muted);font-family:var(--f-mono)}
.gstat.ok .val{color:var(--ok)}.gstat.warn .val{color:var(--warn)}.gstat.alert .val{color:var(--alert)}
.demo-charts{display:grid;grid-template-columns:1.6fr 1fr;gap:12px}
.gpanel{background:rgba(8,18,32,.55);border:1px solid var(--line);border-radius:var(--r-sm);padding:14px 14px 8px}
.gpanel .cap{display:flex;justify-content:space-between;align-items:center;font-family:var(--f-mono);font-size:11px;color:var(--muted);margin-bottom:8px}
.gpanel .cap b{color:var(--text);font-weight:500}
.demo-foot{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-top:22px;flex-wrap:wrap}
.demo-foot p{color:var(--muted);font-size:15.5px;max-width:520px}

/* placeholder overlay (until live demo server is ready) */
.browser.is-placeholder .demo-body{position:relative}
.browser.is-placeholder .demo-row,
.browser.is-placeholder .demo-charts{filter:blur(3px) saturate(.7);opacity:.5;pointer-events:none;user-select:none}

/* real screenshot demo */
.demo-shot{position:relative;background:#0b0f16;line-height:0}
.demo-shot img{display:block;width:100%;height:auto}
.demo-shot::after{content:"";position:absolute;inset:0;box-shadow:inset 0 0 60px rgba(8,18,32,.55);pointer-events:none}
.shot-badge{position:absolute;top:14px;right:14px;z-index:2;display:inline-flex;align-items:center;gap:8px;
  font-family:var(--f-mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--cyan);
  border:1px solid rgba(34,211,238,.35);border-radius:999px;padding:7px 13px;background:rgba(8,18,32,.78);backdrop-filter:blur(6px)}
.shot-badge .pulse{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 0 rgba(34,211,238,.6);animation:pulse 2s infinite}
.demo-cap{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:16px;flex-wrap:wrap}
.demo-cap p{color:var(--muted);font-size:15px;max-width:560px}
.demo-cap .tag-note{font-family:var(--f-mono);font-size:11.5px;color:var(--muted-2);letter-spacing:.04em;white-space:nowrap}
.demo-overlay{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:12px;padding:30px;
  background:radial-gradient(circle at 50% 45%,rgba(10,22,40,.55),rgba(10,22,40,.85));backdrop-filter:blur(1px)}
.demo-overlay h3{font-size:26px}
.demo-overlay p{color:var(--muted);font-size:15.5px;max-width:460px}
.coming-badge{display:inline-flex;align-items:center;gap:9px;font-family:var(--f-mono);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--cyan);
  border:1px solid rgba(34,211,238,.32);border-radius:999px;padding:7px 15px;background:rgba(34,211,238,.06)}
.coming-badge .pulse{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 0 rgba(34,211,238,.6);animation:pulse 2s infinite}

/* research & demos CTA band */
.research-cta{display:flex;align-items:center;gap:22px;background:linear-gradient(120deg,rgba(16,35,56,.8),rgba(10,22,40,.8));
  border:1px solid var(--line-2);border-radius:var(--r-lg);padding:24px 28px;transition:border-color .3s,transform .3s,box-shadow .3s}
.research-cta:hover{border-color:var(--cyan);transform:translateY(-3px);box-shadow:0 22px 50px -28px rgba(0,0,0,.8)}
.research-cta .rc-icon{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;flex:none;
  background:rgba(34,211,238,.09);border:1px solid rgba(34,211,238,.22);color:var(--cyan)}
.research-cta .rc-icon svg{width:26px;height:26px}
.research-cta .rc-copy{flex:1}
.research-cta .rc-copy h3{font-size:21px;margin-bottom:5px}
.research-cta .rc-copy p{color:var(--muted);font-size:15px}
.research-cta .rc-go{display:inline-flex;align-items:center;gap:9px;font-weight:600;font-size:15px;color:var(--cyan);flex:none}
.research-cta .rc-go svg{width:17px;height:17px;transition:transform .2s}
.research-cta:hover .rc-go svg{transform:translateX(4px)}

/* ---------- research page ---------- */
.page-hero{padding:150px 0 40px;position:relative}
.page-hero .eyebrow{margin-bottom:18px}
.page-hero h1{font-size:clamp(38px,5vw,58px);margin-bottom:20px}
.page-hero p.lead{font-size:19px;color:var(--muted);max-width:620px}
.res-block{padding:36px 0 80px}
.res-block .bar{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:24px;flex-wrap:wrap;
  padding-bottom:16px;border-bottom:1px solid var(--line)}
.res-block .bar h2{font-size:26px}
.res-block .bar .count{font-family:var(--f-mono);font-size:12px;color:var(--muted-2);letter-spacing:.06em}
.feed{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.paper{display:flex;flex-direction:column;gap:14px;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r);padding:24px;transition:border-color .3s,transform .3s;position:relative}
.paper:hover{border-color:var(--cyan);transform:translateY(-4px)}
.paper .doc{width:42px;height:42px;border-radius:10px;display:grid;place-items:center;background:rgba(34,211,238,.09);border:1px solid rgba(34,211,238,.22);color:var(--cyan)}
.paper .doc svg{width:21px;height:21px}
.paper .ptag{font-family:var(--f-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--cyan)}
.paper h4{font-size:18px;line-height:1.25}
.paper p{font-size:14px;color:var(--muted);flex:1}
.paper .meta{display:flex;gap:14px;font-family:var(--f-mono);font-size:11px;color:var(--muted-2);letter-spacing:.04em;padding-top:14px;border-top:1px solid var(--line)}
.paper .read{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;color:var(--cyan)}
.paper .read svg{width:15px;height:15px;transition:transform .2s}
.paper:hover .read svg{transform:translateX(3px)}
.feed-state{grid-column:1/-1;border:1px dashed var(--line-2);border-radius:var(--r);padding:48px 30px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:12px}
.feed-state .ic{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:rgba(34,211,238,.08);border:1px solid rgba(34,211,238,.2);color:var(--cyan)}
.feed-state .ic svg{width:24px;height:24px}
.feed-state h4{font-size:19px}
.feed-state p{color:var(--muted);font-size:15px;max-width:440px}
.feed-state.spin .ic svg{animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.skeleton{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r);padding:24px;display:flex;flex-direction:column;gap:14px}
.skeleton .sk{background:linear-gradient(90deg,rgba(120,160,200,.06),rgba(120,160,200,.14),rgba(120,160,200,.06));background-size:200% 100%;animation:shimmer 1.4s infinite;border-radius:6px}
@keyframes shimmer{to{background-position:-200% 0}}

/* ---------- footer ---------- */
footer.site{border-top:1px solid var(--line);padding:50px 0 40px}
.foot-grid{display:flex;justify-content:space-between;align-items:flex-start;gap:30px;flex-wrap:wrap}
.foot-brand{max-width:320px}
.foot-brand p{color:var(--muted-2);font-size:14px;margin-top:14px}
.foot-cols{display:flex;gap:64px;flex-wrap:wrap}
.foot-col h5{font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted-2);margin:0 0 14px;font-weight:500}
.foot-col a{display:block;color:var(--muted);font-size:14.5px;margin-bottom:10px;transition:color .2s}
.foot-col a:hover{color:var(--cyan)}
.foot-bottom{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-top:46px;padding-top:24px;border-top:1px solid var(--line);flex-wrap:wrap;color:var(--muted-2);font-family:var(--f-mono);font-size:12px}

/* ---------- reveal (base state visible; only hidden when JS is active) ---------- */
.js .reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.js .reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}.reveal.d4{transition-delay:.32s}

/* ---------- responsive ---------- */
@media(max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .about-grid{grid-template-columns:1fr;gap:36px}
  .portrait{max-width:360px}
  .pipe{grid-template-columns:repeat(2,1fr)}
  .step .arrow{display:none}
  .contact-grid{grid-template-columns:1fr;gap:36px}
  .results-grid{grid-template-columns:1fr}
  .papers{grid-template-columns:1fr}
  .feed{grid-template-columns:1fr}
  .research-cta{flex-wrap:wrap}
  .demo-row{grid-template-columns:repeat(2,1fr)}
  .demo-charts{grid-template-columns:1fr}
}
@media(max-width:960px){
  .nav-links{display:none}
  .menu-btn{display:grid;place-items:center}
}
@media(max-width:720px){
  .svc-grid{grid-template-columns:1fr}
  .section{padding:88px 0}
  .hero{padding:120px 0 80px}
  .kpis{grid-template-columns:repeat(3,1fr)}
  .foot-cols{gap:40px}
  .two{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important}
  .js .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}