/* ============================================================
   PWB Research — shared design system
   Swap brand tokens in :root once; all pages follow.
   ============================================================ */
@font-face{font-family:'Space Grotesk';src:url('fonts/space-grotesk-500.woff2') format('woff2');font-weight:500;font-display:swap}
@font-face{font-family:'Space Grotesk';src:url('fonts/space-grotesk-600.woff2') format('woff2');font-weight:600;font-display:swap}
@font-face{font-family:'Space Grotesk';src:url('fonts/space-grotesk-700.woff2') format('woff2');font-weight:700;font-display:swap}
:root{
  --brand-font:"Space Grotesk",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --bg:#0b0f1a; --bg-2:#0e1322; --bg-3:#141a2b;
  --line:#1c2438; --line-2:#26314e;
  --text:#e9edf7; --muted:#93a0bd; --dim:#5f6d89;
  --accent:#7c8cff; --accent-2:#58c7e0; --accent-3:#9a8cff;
  --glow:rgba(124,140,255,.30);
  --radius:16px; --maxw:1160px;
  --font:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:"JetBrains Mono","SF Mono",ui-monospace,Menlo,Consolas,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:var(--font);line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.accent{color:var(--accent)} .teal{color:var(--accent-2)} .violet{color:var(--accent-3)}
section{position:relative}
.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--accent-2);margin-bottom:18px;display:flex;align-items:center;gap:10px}
.eyebrow.center{justify-content:center}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--accent-2);opacity:.7}
.eyebrow.center::after{content:"";width:26px;height:1px;background:var(--accent-2);opacity:.7}
h1,h2,h3,h4{font-family:var(--brand-font)}
h1,h2,h3{line-height:1.15;letter-spacing:-.02em;font-weight:650}
h2{font-size:clamp(28px,4vw,42px);margin-bottom:20px}
.lead{color:var(--muted);font-size:clamp(16px,1.5vw,18px);max-width:64ch}
.pad{padding:96px 0}
.pad-sm{padding:64px 0}
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--line-2),transparent)}
.hl{background:linear-gradient(120deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hl-v{background:linear-gradient(120deg,var(--accent-3),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.center{text-align:center}
.mt8{margin-top:8px}.mb0{margin-bottom:0}

/* ---------- NAV ---------- */
header.nav{position:sticky;top:0;z-index:60;backdrop-filter:blur(14px);background:rgba(10,14,23,.72);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:11px;font-family:var(--brand-font);font-weight:600;letter-spacing:.005em;font-size:16.5px}
.brand .logo{width:32px;height:32px;flex:none;background:url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 44 44' fill='none'><defs><linearGradient id='L' x1='4' y1='40' x2='40' y2='4' gradientUnits='userSpaceOnUse'><stop stop-color='%237c8cff'/><stop offset='1' stop-color='%2358c7e0'/></linearGradient></defs><g stroke='url(%23L)' stroke-width='2.4' stroke-linecap='round' opacity='0.9'><line x1='9' y1='32' x2='20' y2='24'/><line x1='20' y1='24' x2='15' y2='12'/><line x1='20' y1='24' x2='32' y2='18'/><line x1='32' y1='18' x2='35' y2='30'/></g><g fill='%230b0f1a' stroke='url(%23L)' stroke-width='2.4'><circle cx='9' cy='32' r='3.4'/><circle cx='15' cy='12' r='3.4'/><circle cx='35' cy='30' r='3.4'/></g><circle cx='20' cy='24' r='4.2' fill='url(%23L)'/><circle cx='32' cy='18' r='4.6' fill='%2358c7e0'/></svg>") center/contain no-repeat;filter:drop-shadow(0 0 9px rgba(124,140,255,.28))}
.nav-links{display:flex;gap:28px;font-size:14.5px;color:var(--muted)}
.nav-links a{position:relative;padding:4px 0;transition:.15s}
.nav-links a:hover{color:var(--text)}
.nav-links a.active{color:var(--text)}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--accent),var(--accent-2))}
.nav-links a.m-only{display:none}
.nav-cta{font-size:14px;padding:9px 18px;border:1px solid var(--line-2);border-radius:10px;color:var(--text);transition:.2s;white-space:nowrap}
.nav-cta:hover{border-color:var(--accent);box-shadow:0 0 0 3px var(--glow)}
.nav-right{display:flex;align-items:center;gap:18px}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.burger span{width:22px;height:2px;background:var(--text);border-radius:2px;transition:.25s}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(max-width:940px){
  .nav-links{position:fixed;inset:66px 0 auto 0;flex-direction:column;gap:0;background:rgba(10,14,23,.98);border-bottom:1px solid var(--line);padding:8px 0;max-height:0;overflow:hidden;transition:max-height .3s ease}
  .nav-links.show{max-height:520px}
  .nav-links a{padding:14px 28px;font-size:16px;border-bottom:1px solid var(--line)}
  .nav-links a.active::after{display:none}
  .nav-links a.active{color:var(--accent-2)}
  .burger{display:flex}
  .nav-cta{display:none}
  .nav-links a.m-only{display:block}
}

/* ---------- PAGE HERO (interior pages) ---------- */
.page-hero{padding:82px 0 64px;position:relative;overflow:hidden}
.page-hero .grid-overlay,.hero .grid-overlay{position:absolute;inset:0;z-index:0;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:54px 54px;mask-image:radial-gradient(ellipse 80% 70% at 50% 20%,#000 30%,transparent 75%);opacity:.5}
.page-hero .blob,.hero .blob{position:absolute;border-radius:50%;filter:blur(90px);opacity:.3;z-index:0}
.page-hero .wrap{position:relative;z-index:2}
.page-hero h1{font-size:clamp(34px,5vw,54px);max-width:20ch;margin-bottom:20px}
.page-hero .lead{max-width:62ch}
.crumb{font-family:var(--mono);font-size:12px;color:var(--dim);letter-spacing:.14em;text-transform:uppercase;margin-bottom:18px}
.crumb a:hover{color:var(--muted)}

/* ---------- HOME HERO ---------- */
.hero{padding:112px 0 84px;position:relative;overflow:hidden}
.b1{width:520px;height:520px;background:var(--accent);top:-160px;right:-120px}
.b2{width:420px;height:420px;background:var(--accent-3);bottom:-180px;left:-120px;opacity:.24}
.hero .wrap{position:relative;z-index:2}
.badge{display:inline-flex;align-items:center;gap:9px;font-family:var(--mono);font-size:12.5px;color:var(--muted);border:1px solid var(--line-2);border-radius:999px;padding:7px 15px;margin-bottom:28px;background:rgba(20,27,43,.6)}
.badge .dot{width:7px;height:7px;border-radius:50%;background:var(--accent-2);box-shadow:0 0 10px var(--accent-2)}
.hero h1{font-size:clamp(38px,6vw,66px);max-width:16ch;margin-bottom:26px}
.hero .lead{font-size:clamp(17px,1.7vw,20px);max-width:60ch}
.hero-cta{display:flex;gap:14px;margin-top:36px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:9px;font-size:15px;font-weight:550;padding:13px 24px;border-radius:12px;transition:.2s;cursor:pointer}
.btn-primary{background:var(--accent);color:#06122e;box-shadow:0 8px 30px var(--glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 38px var(--glow)}
.btn-ghost{border:1px solid var(--line-2);color:var(--text)}
.btn-ghost:hover{border-color:var(--accent)}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin-top:64px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--line)}
.hero-stats .cell{background:var(--bg-2);padding:24px 22px}
.hero-stats .k{font-family:var(--mono);font-size:clamp(20px,2.2vw,28px);color:var(--text);font-weight:600}
.hero-stats .k span{color:var(--accent-2)}
.hero-stats .v{color:var(--dim);font-size:13px;margin-top:6px}
@media(max-width:720px){.hero-stats{grid-template-columns:repeat(2,1fr)}}

/* ---------- PILLARS / CARD GRIDS ---------- */
.pillars{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.pill{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;transition:.25s}
.pill:hover{border-color:var(--line-2);transform:translateY(-3px)}
.pill .ic{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;margin-bottom:18px;background:linear-gradient(135deg,rgba(124,140,255,.16),rgba(88,199,224,.10));border:1px solid var(--line-2);color:var(--accent)}
.ic svg,.gic svg{width:23px;height:23px;display:block}
.pill h3{font-size:17px;margin-bottom:9px}
.pill p{color:var(--muted);font-size:14px;line-height:1.55}
.pill a.more{display:inline-block;margin-top:14px;font-size:13px;color:var(--accent);font-family:var(--mono)}
@media(max-width:900px){.pillars{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.pillars{grid-template-columns:1fr}}

.two{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.two.align{align-items:center}
@media(max-width:860px){.two{grid-template-columns:1fr}}
.card{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.card h3{font-size:18px;margin-bottom:10px;display:flex;align-items:center;gap:10px}
.card p{color:var(--muted);font-size:14.5px}
.num{font-family:var(--mono);color:var(--accent);font-size:14px}

/* ---------- FEATURE LIST (research areas) ---------- */
.feat{border-top:1px solid var(--line)}
.feat .row{display:grid;grid-template-columns:56px 1fr;gap:24px;padding:30px 0;border-bottom:1px solid var(--line)}
.feat .row .n{font-family:var(--mono);color:var(--accent);font-size:15px}
.feat .row h3{font-size:20px;margin-bottom:10px}
.feat .row p{color:var(--muted);font-size:15px;max-width:74ch;margin-bottom:14px}
.taglist{display:flex;flex-wrap:wrap;gap:8px}
.taglist span{font-family:var(--mono);font-size:12px;color:var(--muted);border:1px solid var(--line-2);border-radius:8px;padding:6px 11px;background:var(--bg-2)}
@media(max-width:600px){.feat .row{grid-template-columns:1fr;gap:10px}}

/* ---------- PROJECT LAYERS ---------- */
.project{background:var(--bg-2);border:1px solid var(--line);border-radius:20px;overflow:hidden}
.project-head{padding:32px 34px 24px;border-bottom:1px solid var(--line)}
.project-head .tag{font-family:var(--mono);font-size:12px;color:var(--accent-2);letter-spacing:.12em;text-transform:uppercase}
.project-head h3{font-size:clamp(20px,2.4vw,26px);margin:12px 0}
.project-head p{color:var(--muted);max-width:76ch;font-size:15px}
.layer{display:grid;grid-template-columns:200px 1fr 1fr;gap:24px;padding:22px 34px;border-bottom:1px solid var(--line);align-items:start}
.layer:last-child{border-bottom:none}
.layer:hover{background:var(--bg-3)}
.layer .l-name{font-weight:600;font-size:15px;display:flex;align-items:center;gap:11px}
.layer .l-name .idx{font-family:var(--mono);font-size:12px;color:var(--accent);border:1px solid var(--line-2);border-radius:6px;padding:2px 7px}
.layer .l-h{color:var(--text);font-size:14px}
.layer .l-w{color:var(--dim);font-size:13.5px}
.layer .lbl{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--dim);display:block;margin-bottom:5px}
@media(max-width:820px){.layer{grid-template-columns:1fr;gap:12px}}

/* ---------- DATA TABLE ---------- */
.dtable{width:100%;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;border-collapse:separate;border-spacing:0}
.dtable th,.dtable td{text-align:left;padding:16px 20px;border-bottom:1px solid var(--line);font-size:14px;vertical-align:top}
.dtable th{background:var(--bg-3);color:var(--muted);font-family:var(--mono);font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;font-weight:600}
.dtable td:first-child{font-weight:600;color:var(--text);width:26%}
.dtable td{color:var(--muted)}
.dtable tr:last-child td{border-bottom:none}
.dtable tr:hover td{background:var(--bg-2)}
.table-scroll{overflow-x:auto}

/* ---------- MODEL STACK ---------- */
.stack{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.mcell{background:var(--bg-2);border:1px solid var(--line);border-radius:14px;padding:24px 22px;transition:.2s}
.mcell:hover{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}
.mcell .mk{font-family:var(--mono);font-size:13px;color:var(--accent-2);margin-bottom:8px}
.mcell h4{font-size:15.5px;margin-bottom:8px}
.mcell p{color:var(--muted);font-size:13.5px;line-height:1.5}
@media(max-width:800px){.stack{grid-template-columns:1fr}}

/* ---------- COMPUTE PANEL ---------- */
.panel-band{background:radial-gradient(ellipse 60% 100% at 100% 0%,rgba(160,107,255,.12),transparent 60%),radial-gradient(ellipse 70% 100% at 0% 100%,rgba(41,230,200,.10),transparent 60%),var(--bg-2);border:1px solid var(--line-2);border-radius:22px;padding:44px}
.gpu-panel{border:1px solid var(--line-2);border-radius:16px;overflow:hidden;background:rgba(10,14,23,.5)}
.gpu-row{display:flex;justify-content:space-between;gap:16px;padding:18px 22px;border-bottom:1px solid var(--line)}
.gpu-row:last-child{border-bottom:none}
.gpu-row .g-name{font-family:var(--mono);font-weight:600;color:var(--text);font-size:14.5px;display:flex;align-items:center;gap:10px}
.gpu-row .g-name .chip{width:8px;height:8px;border-radius:2px;background:var(--accent)}
.gpu-row .g-use{color:var(--dim);font-size:13px;text-align:right;max-width:54%}
.cbullets{list-style:none;display:grid;gap:12px}
.cbullets li{display:flex;gap:12px;color:var(--muted);font-size:14.5px;align-items:flex-start}
.cbullets li::before{content:"▹";color:var(--accent-2);font-weight:700}

/* ---------- METRIC CHIPS ---------- */
.metrics{display:flex;flex-wrap:wrap;gap:10px}
.chip-m{font-family:var(--mono);font-size:13px;color:var(--muted);border:1px solid var(--line-2);border-radius:9px;padding:9px 14px;background:var(--bg-2)}
.chip-m b{color:var(--accent-2);font-weight:600}

/* ---------- SERVICES ---------- */
.svc{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.svc .s{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.2s}
.svc .s:hover{transform:translateY(-3px);border-color:var(--line-2)}
.svc .s .sn{font-family:var(--mono);font-size:12px;color:var(--dim);margin-bottom:14px}
.svc .s h4{font-size:16.5px;margin-bottom:9px}
.svc .s p{color:var(--muted);font-size:14px}
@media(max-width:860px){.svc{grid-template-columns:1fr}}

/* ---------- PROCESS STEPS ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.step{padding:26px 22px;border-right:1px solid var(--line);background:var(--bg-2)}
.step:last-child{border-right:none}
.step .sidx{font-family:var(--mono);color:var(--accent);font-size:13px;margin-bottom:12px}
.step h4{font-size:15px;margin-bottom:8px}
.step p{color:var(--muted);font-size:13px}
@media(max-width:860px){.steps{grid-template-columns:1fr 1fr}.step{border-bottom:1px solid var(--line)}}
@media(max-width:520px){.steps{grid-template-columns:1fr}}

/* ---------- GAMING CARDS ---------- */
.gcards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.gcard{background:rgba(10,14,23,.5);border:1px solid var(--line);border-radius:14px;padding:24px 22px;transition:.22s}
.gcard:hover{border-color:var(--accent-3);transform:translateY(-3px)}
.gcard .gic{width:44px;height:44px;border-radius:11px;display:grid;place-items:center;margin-bottom:16px;background:linear-gradient(135deg,rgba(154,140,255,.18),rgba(88,199,224,.10));border:1px solid var(--line-2);color:var(--accent)}
.gcard h4{font-size:15.5px;margin-bottom:8px}
.gcard p{color:var(--muted);font-size:13.5px;line-height:1.5}
.gtie{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:26px;padding:18px 22px;border:1px dashed var(--line-2);border-radius:12px;color:var(--muted);font-size:14px;background:rgba(10,14,23,.35)}
.gtie .gt-badge{font-family:var(--mono);font-size:11.5px;color:var(--accent-3);border:1px solid var(--line-2);border-radius:7px;padding:5px 11px;white-space:nowrap}
@media(max-width:880px){.gcards{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.gcards{grid-template-columns:1fr}}

/* ---------- CTA BAND ---------- */
.cta-band{background:radial-gradient(ellipse 80% 120% at 50% 0%,rgba(91,141,255,.16),transparent 60%),var(--bg-2);border:1px solid var(--line-2);border-radius:24px;padding:60px 40px;text-align:center}
.cta-band h2{font-size:clamp(26px,4vw,42px);max-width:22ch;margin:0 auto 16px}
.cta-band .lead{margin:0 auto 28px;text-align:center}

/* ---------- CONTACT ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
@media(max-width:820px){.contact-grid{grid-template-columns:1fr;gap:28px}}
.info-list{display:grid;gap:18px}
.info-item{border:1px solid var(--line);border-radius:14px;padding:20px 22px;background:var(--bg-2)}
.info-item .lbl{font-family:var(--mono);font-size:11px;color:var(--dim);text-transform:uppercase;letter-spacing:.1em;margin-bottom:6px}
.info-item .val{font-size:16px;color:var(--text)}
.info-item .val a{color:var(--accent)}
.form{display:grid;gap:16px;background:var(--bg-2);border:1px solid var(--line);border-radius:18px;padding:28px}
.field{display:grid;gap:7px}
.field label{font-size:13px;color:var(--muted);font-family:var(--mono);letter-spacing:.04em}
.field input,.field textarea{background:var(--bg);border:1px solid var(--line-2);border-radius:10px;padding:12px 14px;color:var(--text);font-family:var(--font);font-size:14.5px;transition:.15s}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--glow)}
.field textarea{resize:vertical;min-height:120px}
.form .note{font-size:12.5px;color:var(--dim)}

/* ---------- FOOTER ---------- */
footer{border-top:1px solid var(--line);padding:56px 0 34px;color:var(--dim);font-size:13.5px;margin-top:40px}
.foot-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;margin-bottom:40px}
.foot-brand p{color:var(--dim);font-size:13.5px;margin-top:14px;max-width:34ch}
.foot-col h5{font-size:12px;font-family:var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:14px}
.foot-col a{display:block;color:var(--dim);padding:5px 0;transition:.15s}
.foot-col a:hover{color:var(--text)}
.foot-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;padding-top:24px;border-top:1px solid var(--line)}
@media(max-width:760px){.foot-top{grid-template-columns:1fr 1fr}.foot-brand{grid-column:1/-1}}

/* ---------- SCROLL REVEAL ---------- */
.fade{opacity:0;transform:translateY(22px);transition:.7s cubic-bezier(.2,.7,.2,1)}
.fade.in{opacity:1;transform:none}