/* ===== GenEduserve — premium theme (LIGHT default + DARK toggle) ===== */
:root{
  /* shared accents */
  --i1:#6366f1; --i2:#a855f7; --i3:#06b6d4;
  --grad:linear-gradient(120deg,#6366f1,#a855f7 55%,#06b6d4);
  --radius:18px;
  /* LIGHT theme tokens (default) */
  --ink:#0f172a; --muted:#566077; --dim:#8a93a7;
  --line:rgba(15,23,42,.10); --line2:rgba(15,23,42,.16);
  --fx-base:#ffffff;
  --fx1:rgba(168,85,247,.12); --fx2:rgba(99,102,241,.12); --fx3:rgba(6,182,212,.08);
  --grid-line:rgba(15,23,42,.045);
  --panel:#ffffff;
  --panel-grad:linear-gradient(180deg,#ffffff,#fafaff);
  --soft:#f3f4fb;
  --glow:0 24px 60px -26px rgba(99,102,241,.28),0 2px 8px rgba(15,23,42,.05);
  --nav-bg:rgba(255,255,255,.7); --nav-bg2:rgba(255,255,255,.88);
  --code:#7c3aed;
}
html[data-theme="dark"]{
  --ink:#eceefb; --muted:#9aa0c4; --dim:#6b7099;
  --line:rgba(255,255,255,.09); --line2:rgba(255,255,255,.14);
  --fx-base:#070712;
  --fx1:rgba(168,85,247,.20); --fx2:rgba(99,102,241,.20); --fx3:rgba(34,211,238,.10);
  --grid-line:rgba(255,255,255,.035);
  --panel:#0f1024;
  --panel-grad:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.02));
  --soft:rgba(255,255,255,.04);
  --glow:0 0 0 1px rgba(255,255,255,.06),0 30px 80px -30px rgba(99,102,241,.45);
  --nav-bg:rgba(7,7,18,.55); --nav-bg2:rgba(7,7,18,.8);
  --code:#c4b5fd;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--fx-base);line-height:1.65;overflow-x:hidden;-webkit-font-smoothing:antialiased;transition:background .3s,color .3s}
a{text-decoration:none;color:inherit}
h1,h2,h3,.font-d{font-family:'Space Grotesk','Inter',sans-serif;letter-spacing:-.02em}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.center{text-align:center}
.grad-t{background:var(--grad);background-size:200% auto;-webkit-background-clip:text;background-clip:text;color:transparent;animation:shine 7s linear infinite}
@keyframes shine{to{background-position:200% center}}

.bgfx{position:fixed;inset:0;z-index:-2;transition:background .3s;background:
  radial-gradient(800px 500px at 78% -5%,var(--fx1),transparent 60%),
  radial-gradient(700px 500px at 10% 8%,var(--fx2),transparent 60%),
  radial-gradient(600px 600px at 60% 100%,var(--fx3),transparent 60%),
  var(--fx-base)}
.bggrid{position:fixed;inset:0;z-index:-1;background-image:linear-gradient(var(--grid-line) 1px,transparent 1px),linear-gradient(90deg,var(--grid-line) 1px,transparent 1px);background-size:60px 60px;mask-image:radial-gradient(circle at 50% 0,black,transparent 75%)}

.btn{display:inline-flex;align-items:center;gap:9px;font-weight:600;border-radius:13px;padding:14px 26px;font-size:15px;transition:.22s;cursor:pointer;border:0;white-space:nowrap}
.btn-primary{background:var(--grad);background-size:160% auto;color:#fff;box-shadow:0 10px 30px -6px rgba(124,58,237,.5)}
.btn-primary:hover{transform:translateY(-3px);background-position:right center;box-shadow:0 18px 42px -8px rgba(124,58,237,.65)}
.btn-glass{background:var(--soft);color:var(--ink);border:1px solid var(--line2);backdrop-filter:blur(8px)}
.btn-glass:hover{border-color:var(--i1);transform:translateY(-2px)}
.btn-white{background:#fff;color:#4f46e5;box-shadow:0 8px 24px -8px rgba(0,0,0,.25)}.btn-white:hover{transform:translateY(-3px)}

.glass{background:var(--panel-grad);border:1px solid var(--line);border-radius:var(--radius);backdrop-filter:blur(12px)}

/* nav */
header{position:sticky;top:0;z-index:80;transition:.3s;background:var(--nav-bg);backdrop-filter:blur(16px);border-bottom:1px solid transparent}
header.scrolled{border-bottom-color:var(--line);background:var(--nav-bg2)}
nav{display:flex;align-items:center;justify-content:space-between;height:74px}
.logo{display:flex;align-items:center;gap:11px;font-weight:700;font-size:21px;font-family:'Space Grotesk'}
.logo .mark{width:36px;height:36px;border-radius:10px;background:var(--grad);display:grid;place-items:center;color:#fff;font-size:19px;font-weight:700;box-shadow:0 8px 22px -4px rgba(124,58,237,.6)}
.logo b{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.navside{display:flex;align-items:center;gap:18px}
.navlinks{display:flex;gap:30px;font-size:14.5px;font-weight:500;color:var(--muted)}
.navlinks a{transition:.2s}.navlinks a:hover,.navlinks a.active{color:var(--ink)}
.themetoggle{width:40px;height:40px;border-radius:11px;border:1px solid var(--line2);background:var(--soft);color:var(--ink);cursor:pointer;font-size:17px;display:grid;place-items:center;transition:.2s}
.themetoggle:hover{border-color:var(--i1);transform:translateY(-2px)}
.themetoggle .moon{display:none}html[data-theme="dark"] .themetoggle .sun{display:none}html[data-theme="dark"] .themetoggle .moon{display:block}
.navtoggle{display:none;background:none;border:0;font-size:25px;cursor:pointer;color:var(--ink)}
@media(max-width:920px){
  .navlinks{position:fixed;inset:74px 0 auto 0;flex-direction:column;background:var(--fx-base);padding:20px 24px;gap:18px;border-bottom:1px solid var(--line);transform:translateY(-130%);transition:.3s}
  .navlinks.open{transform:translateY(0)}.navtoggle{display:block}.nav-cta{display:none}
}

.hero{position:relative;padding:96px 0 70px;overflow:hidden}
@media(max-width:920px){.hero{padding:54px 0 40px}}
.hero-in{display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center}
@media(max-width:920px){.hero-in{grid-template-columns:1fr;gap:38px}}
.badge{display:inline-flex;align-items:center;gap:9px;background:var(--soft);border:1px solid var(--line2);color:var(--muted);font-weight:600;font-size:13px;padding:8px 15px;border-radius:30px;margin-bottom:24px}
.badge .dot{width:8px;height:8px;border-radius:50%;background:var(--i3);box-shadow:0 0 12px var(--i3);animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
h1{font-size:60px;line-height:1.04;font-weight:700}
@media(max-width:920px){h1{font-size:40px}}
.lead{font-size:19px;color:var(--muted);margin:22px 0 32px;max-width:560px}
.cta-row{display:flex;gap:14px;flex-wrap:wrap}
.trust{margin-top:26px;display:flex;align-items:center;gap:14px;color:var(--dim);font-size:13px}
.trust .av{display:flex}.trust .av span{width:30px;height:30px;border-radius:50%;border:2px solid var(--fx-base);margin-left:-8px;background:var(--grad);display:grid;place-items:center;font-size:12px;color:#fff;font-weight:700}

.stage{position:relative;height:460px}
@media(max-width:920px){.stage{height:380px}}
.float{position:absolute;animation:bob 6s ease-in-out infinite}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-16px)}}
.panel-card{padding:18px;border-radius:18px;box-shadow:var(--glow)}
.dash{width:108%;left:-4%;top:10px}
.dash .row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.kpi{background:var(--soft);border:1px solid var(--line);border-radius:12px;padding:13px}
.kpi .n{font-size:20px;font-weight:700;font-family:'Space Grotesk'}.kpi .l{font-size:11px;color:var(--muted)}
.kpi.wide{grid-column:span 3;display:flex;justify-content:space-between;align-items:center;margin-top:10px}
.spark{display:flex;gap:5px;align-items:flex-end;height:42px}
.spark span{width:11px;background:var(--grad);border-radius:3px;animation:grow 1s ease both}
@keyframes grow{from{height:0}}
.phone{width:170px;right:-6px;bottom:0;animation-delay:-2s;border-radius:26px;padding:12px}
.phone .notch{width:50px;height:5px;background:var(--line2);border-radius:5px;margin:2px auto 12px}
.pill-row{background:var(--soft);border:1px solid var(--line);border-radius:10px;padding:10px 12px;margin-bottom:8px;font-size:12.5px;display:flex;align-items:center;gap:8px;color:var(--muted)}
.badge-float{left:-10px;bottom:64px;animation-delay:-3.5s;padding:12px 16px;border-radius:14px;display:flex;align-items:center;gap:10px;font-size:13px;font-weight:600}
.ai-dot{width:34px;height:34px;border-radius:10px;background:var(--grad);display:grid;place-items:center;font-size:17px}

.marquee{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:18px 0;overflow:hidden;background:var(--soft)}
.mq{display:flex;gap:40px;white-space:nowrap;animation:scrollx 28s linear infinite;width:max-content}
.mq span{color:var(--dim);font-weight:600;font-size:15px;display:flex;align-items:center;gap:40px}
.mq span:after{content:"◆";color:var(--i2);font-size:9px}
@keyframes scrollx{to{transform:translateX(-50%)}}

section{padding:90px 0;position:relative}
.eyebrow{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;font-weight:700;font-size:13px;letter-spacing:2px;text-transform:uppercase;text-align:center}
.h2{font-size:44px;font-weight:700;text-align:center;margin:14px 0 16px}
@media(max-width:920px){.h2{font-size:31px}}
.sub{text-align:center;color:var(--muted);max-width:640px;margin:0 auto 56px;font-size:17px}

.vp{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
@media(max-width:980px){.vp{grid-template-columns:1fr 1fr}}@media(max-width:560px){.vp{grid-template-columns:1fr}}
.vp .glass{padding:26px}
.vp .ic{width:50px;height:50px;border-radius:13px;background:var(--soft);border:1px solid var(--line);display:grid;place-items:center;font-size:24px;margin-bottom:16px}
.vp h3{font-size:18px;margin-bottom:8px}.vp p{color:var(--muted);font-size:14.5px}

.bento{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
@media(max-width:980px){.bento{grid-template-columns:1fr 1fr}}@media(max-width:560px){.bento{grid-template-columns:1fr}}
.cell{padding:26px;border-radius:var(--radius);position:relative;overflow:hidden;transition:.25s;background:var(--panel-grad);border:1px solid var(--line)}
.cell:hover{transform:translateY(-6px);border-color:var(--line2);box-shadow:var(--glow)}
.cell:before{content:"";position:absolute;width:160px;height:160px;background:radial-gradient(circle,rgba(124,58,237,.22),transparent 70%);top:-60px;right:-40px;opacity:0;transition:.3s}
.cell:hover:before{opacity:1}
.cell .ic{font-size:26px;margin-bottom:14px}
.cell h3{font-size:18px;margin-bottom:7px}.cell p{color:var(--muted);font-size:14px}
.cell ul{list-style:none;margin-top:12px;font-size:13px;color:var(--dim)}
.cell ul li{padding:3px 0 3px 18px;position:relative}.cell ul li:before{content:"›";position:absolute;left:0;color:var(--i1);font-weight:700}
.cell.span2{grid-column:span 2}@media(max-width:560px){.cell.span2{grid-column:span 1}}
.cell.feat{background:linear-gradient(135deg,rgba(99,102,241,.14),rgba(168,85,247,.08));border-color:rgba(168,85,247,.28)}

.spotlight{background:linear-gradient(180deg,transparent,rgba(99,102,241,.05),transparent)}
.spot-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:880px){.spot-grid{grid-template-columns:1fr}}
.spot{padding:30px;border-radius:var(--radius)}
.spot .tag{font-size:11px;font-weight:700;letter-spacing:1.5px;color:var(--i1);text-transform:uppercase}
.spot h3{font-size:22px;margin:12px 0 8px}.spot p{color:var(--muted);font-size:14.5px}
.spot .em{font-size:40px;margin-bottom:6px}

.module{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:center;padding:54px 0;border-top:1px solid var(--line)}
.module:nth-child(even) .mtext{order:2}
@media(max-width:880px){.module{grid-template-columns:1fr;gap:24px}.module:nth-child(even) .mtext{order:0}}
.mtag{display:inline-block;font-size:12px;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:14px}
.module h3{font-size:30px;margin-bottom:12px}
.module .mtext>p{color:var(--muted);font-size:16px;margin-bottom:18px}
.chips{display:flex;flex-wrap:wrap;gap:9px}
.chip{background:var(--soft);border:1px solid var(--line);border-radius:10px;padding:9px 14px;font-size:13.5px;font-weight:500;color:var(--muted);transition:.2s}
.chip:hover{border-color:var(--i2);color:var(--ink);transform:translateY(-2px);box-shadow:0 6px 18px -8px rgba(168,85,247,.5)}
.mvisual{border-radius:22px;min-height:240px;display:grid;place-items:center;font-size:92px;background:radial-gradient(circle at 50% 40%,rgba(124,58,237,.15),transparent 70%),var(--panel-grad);border:1px solid var(--line)}

.statband{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;text-align:center}
@media(max-width:760px){.statband{grid-template-columns:1fr 1fr}}
.statband .glass{padding:30px 16px}
.statband .n{font-size:40px;font-weight:700;font-family:'Space Grotesk'}
.statband .l{color:var(--muted);font-size:14px;margin-top:4px}

.quote{max-width:820px;margin:0 auto;text-align:center;padding:46px 30px;border-radius:24px}
.quote p{font-size:24px;font-weight:500;font-family:'Space Grotesk';line-height:1.5}
.quote .who{margin-top:20px;color:var(--muted);font-size:14px}

.creds{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:6px 0 32px}
@media(max-width:900px){.creds{grid-template-columns:1fr 1fr}}@media(max-width:520px){.creds{grid-template-columns:1fr}}
.cred{padding:20px;border-radius:15px;transition:.2s}
.cred:hover{transform:translateY(-4px);border-color:var(--line2)}
.cred .role{font-size:12px;text-transform:uppercase;letter-spacing:1px;color:var(--i1);font-weight:700}
.cred .kv{font-size:14px;margin-top:9px;color:var(--muted)}.cred .kv b{color:var(--ink)}.cred .kv span{color:var(--code);font-family:monospace}

.final .box{border-radius:28px;padding:64px 28px;text-align:center;position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(99,102,241,.16),rgba(168,85,247,.12));border:1px solid rgba(168,85,247,.28)}
.final h2{font-size:40px;font-weight:700}
.final p{color:var(--muted);margin:14px 0 28px;font-size:18px}

footer{border-top:1px solid var(--line);padding:56px 0 30px;font-size:14px;color:var(--muted)}
.foot{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:26px}
@media(max-width:760px){.foot{grid-template-columns:1fr 1fr}}
.fcol h4{color:var(--ink);font-size:14px;margin-bottom:13px}
.fcol a{display:block;padding:4px 0;color:var(--dim);transition:.2s}.fcol a:hover{color:var(--ink)}
.copy{border-top:1px solid var(--line);margin-top:34px;padding-top:20px;text-align:center;color:var(--dim);font-size:13px}

/* 3D model showcase */
.threed{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:center}
@media(max-width:880px){.threed{grid-template-columns:1fr}}
.viewer3d{width:100%;height:440px;border-radius:24px;border:1px solid rgba(255,255,255,.10);background:radial-gradient(circle at 50% 42%,rgba(124,58,237,.26),transparent 60%),linear-gradient(180deg,#12132b,#0a0a18);box-shadow:var(--glow);overflow:hidden}
@media(max-width:880px){.viewer3d{height:340px}}
.viewer3d model-viewer{width:100%;height:100%;--progress-bar-color:var(--i2)}
.v3d-hint{position:absolute;bottom:14px;left:0;right:0;text-align:center;font-size:12px;color:rgba(255,255,255,.55);pointer-events:none}
.threed .em-tag{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;color:var(--i1);background:var(--soft);border:1px solid var(--line);padding:7px 13px;border-radius:20px;margin-bottom:16px}

.reveal{opacity:0;transform:translateY(30px);transition:.75s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
.d1{transition-delay:.08s}.d2{transition-delay:.16s}.d3{transition-delay:.24s}.d4{transition-delay:.32s}.d5{transition-delay:.4s}

/* how-it-works */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
@media(max-width:880px){.steps{grid-template-columns:1fr 1fr}}@media(max-width:520px){.steps{grid-template-columns:1fr}}
.step{padding:26px}
.step .num{width:42px;height:42px;border-radius:12px;background:var(--grad);color:#fff;display:grid;place-items:center;font-weight:700;font-family:'Space Grotesk';margin-bottom:14px}
.step h3{font-size:18px;margin-bottom:6px}.step p{color:var(--muted);font-size:14px}
/* integrations */
.intgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
@media(max-width:880px){.intgrid{grid-template-columns:1fr 1fr}}@media(max-width:480px){.intgrid{grid-template-columns:1fr}}
.intcard{padding:18px 20px;display:flex;align-items:center;gap:12px;font-weight:600;font-size:14.5px;transition:.2s}
.intcard:hover{transform:translateY(-3px);border-color:var(--line2)}
.intcard .ico{width:42px;height:42px;border-radius:11px;background:var(--soft);border:1px solid var(--line);display:grid;place-items:center;font-size:20px;flex:none}
.intcard small{display:block;color:var(--muted);font-weight:400;font-size:12.5px}
/* faq */
.faq{max-width:820px;margin:0 auto;display:grid;gap:12px}
.faq details{padding:0 22px;overflow:hidden;transition:.2s}
.faq details[open]{border-color:var(--line2)}
.faq summary{list-style:none;cursor:pointer;padding:18px 0;font-weight:600;font-size:16px;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";font-size:24px;color:var(--i1);transition:.25s;font-weight:300}
.faq details[open] summary:after{transform:rotate(45deg)}
.faq details>p{color:var(--muted);font-size:14.5px;padding:0 0 18px;margin:0}

/* contact */
.contact{display:grid;grid-template-columns:1fr 1fr;overflow:hidden;border-radius:24px}
@media(max-width:880px){.contact{grid-template-columns:1fr}}
.cinfo{padding:46px}
.gsk{display:inline-block;font-size:12px;font-weight:700;letter-spacing:1px;text-transform:uppercase;color:var(--i1);margin-bottom:16px}
.cinfo h2{font-size:32px;text-align:left;margin:0 0 12px}
.cinfo>p{color:var(--muted);margin-bottom:22px}
.cline{display:flex;gap:14px;align-items:center;padding:11px 0}
.cic{width:44px;height:44px;border-radius:12px;background:var(--soft);border:1px solid var(--line);display:grid;place-items:center;font-size:19px;flex:none}
.cline small{display:block;color:var(--dim);font-size:12px}.cline a{font-weight:600}
.cform{padding:46px;background:var(--soft);border-left:1px solid var(--line)}
@media(max-width:880px){.cform{border-left:0;border-top:1px solid var(--line)}}
.frow{margin-bottom:14px}.frow.two{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:480px){.frow.two{grid-template-columns:1fr}}
.cform input,.cform textarea{width:100%;padding:14px 16px;border-radius:12px;border:1px solid var(--line2);background:var(--panel);color:var(--ink);font-size:15px;font-family:inherit;transition:.2s;resize:vertical}
.cform input:focus,.cform textarea:focus{outline:none;border-color:var(--i1);box-shadow:0 0 0 3px rgba(99,102,241,.15)}
.fmsg{margin-top:12px;font-size:14px;text-align:center}.fmsg.ok{color:#16a34a}.fmsg.err{color:#ef4444}

/* ---- SVG line icons ---- */
.i{display:inline-block;width:26px;height:26px;color:var(--i1);vertical-align:middle;flex:none}
.em .i{width:34px;height:34px}
.mvisual .i{width:78px;height:78px;color:var(--i2)}
.cic .i,.ico .i{width:22px;height:22px}
.pill-row .i{width:16px;height:16px;color:var(--muted)}
.ai-dot .i{width:18px;height:18px;color:#fff}
.em-tag .i{width:15px;height:15px;margin-right:2px}
.btn .i{width:18px;height:18px;color:currentColor}
.appdl{margin-top:18px;width:100%;justify-content:center;font-size:14px}