:root{--ink:#0e1a2b;--ink2:#12233a;--accent:#2dd4bf;--accent-dark:#14b8a6;--amber:#f59e0b;--text:#1f2937;--muted:#6b7280;--line:#e5e7eb;--bg:#ffffff;--alt:#f4f7fa;--font:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);font-size:17px;line-height:1.65;color:var(--text);background:var(--bg)}
a{color:var(--accent-dark);text-decoration:none}a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}
h1,h2,h3,h4{font-family:var(--font);color:var(--ink);line-height:1.15;margin:0 0 .5em;font-weight:800;letter-spacing:-.01em}
h1{font-size:clamp(30px,4.5vw,52px)}h2{font-size:clamp(24px,3vw,34px)}h3{font-size:19px;font-weight:700}h4{font-size:14px;text-transform:uppercase;letter-spacing:.08em;color:#9fb3c8}
p{margin:0 0 1em}
.wrap{max-width:1140px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:#fff;padding:8px;z-index:100}
.muted{color:var(--muted)}.small{font-size:14px}.narrow{max-width:760px}
.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:13px;font-weight:700;color:var(--accent);margin-bottom:14px}
.lead{font-size:20px;color:#374151}

/* buttons */
.btn{display:inline-block;background:var(--accent);color:var(--ink);padding:13px 24px;border-radius:8px;font-weight:700;font-size:15px;border:0;cursor:pointer;font-family:var(--font);transition:background .2s,transform .1s}
.btn:hover{background:var(--accent-dark);text-decoration:none;transform:translateY(-1px)}
.btn.small{padding:9px 16px;font-size:14px}
.btn.ghost{background:transparent;border:2px solid rgba(255,255,255,.45);color:#fff}.btn.ghost:hover{background:rgba(255,255,255,.1)}
.btn.ghost.dark{border-color:var(--ink);color:var(--ink)}.btn.ghost.dark:hover{background:var(--ink);color:#fff}
.btn.light{background:#fff;color:var(--ink)}.btn.light:hover{background:#e8fffb}
.actions .btn{margin:6px 12px 6px 0}

/* header */
.top{background:var(--ink);color:#fff;position:sticky;top:0;z-index:50;border-bottom:1px solid rgba(255,255,255,.08)}
.top .wrap{display:flex;align-items:center;gap:28px;min-height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:20px;letter-spacing:-.01em}
.brand:hover{text-decoration:none}
.logo{width:32px;height:32px;color:#fff}
.top nav{margin-left:auto}
.top ul{list-style:none;margin:0;padding:0;display:flex;gap:4px}
.top li a{display:block;padding:8px 12px;color:#dbe4ee;font-weight:500;font-size:15px;border-radius:6px}
.top li a:hover,.top li.current a{color:#fff;background:rgba(255,255,255,.08);text-decoration:none}
.toggle{display:none;background:none;border:0;color:#fff;font:inherit;font-weight:700;cursor:pointer;margin-left:auto;padding:8px}
.toggle span{display:inline-block;width:20px;height:2px;background:#fff;position:relative;vertical-align:middle;margin-right:8px}
.toggle span::before,.toggle span::after{content:"";position:absolute;left:0;width:20px;height:2px;background:#fff}.toggle span::before{top:-6px}.toggle span::after{top:6px}

/* hero */
.hero{background:radial-gradient(1200px 500px at 80% -10%,#1b3a5c 0,var(--ink) 60%);color:#fff;padding:72px 0 64px}
.hero h1{color:#fff}
.hero .lead{color:#c7d3e0;max-width:600px}
.hero-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:48px;align-items:center}
.hero-art{width:100%;height:auto;filter:drop-shadow(0 20px 40px rgba(0,0,0,.4))}
.proof{list-style:none;padding:0;margin:24px 0 0;display:grid;gap:8px;color:#c7d3e0;font-size:15px}
.proof li{padding-left:26px;position:relative}
.proof li::before{content:"";position:absolute;left:0;top:6px;width:14px;height:14px;border-radius:50%;background:var(--accent)}

/* page head */
.pagehead{background:var(--ink);color:#fff;padding:56px 0 48px}
.pagehead h1{color:#fff}.pagehead .lead{color:#c7d3e0;margin:0;max-width:720px}

/* sections */
.section{padding:64px 0}.section.alt{background:var(--alt)}
.section h2{margin-bottom:28px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:26px}
.section.alt .card{border-color:transparent;box-shadow:0 1px 2px rgba(0,0,0,.04)}
.card .ic{width:34px;height:34px;color:var(--accent-dark);margin-bottom:14px}
.card p{margin:0;color:#4b5563;font-size:15.5px}
.usecases{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.usecases a{position:relative;display:block;border-radius:12px;overflow:hidden;color:#fff;font-weight:700}
.usecases img{aspect-ratio:4/3;object-fit:cover;width:100%;transition:transform .4s}
.usecases a:hover img{transform:scale(1.04)}
.usecases span{position:absolute;left:0;right:0;bottom:0;padding:48px 16px 14px;background:linear-gradient(transparent,rgba(14,26,43,.95));font-size:15px}
.usecases a:hover{text-decoration:none}
.split{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center}
.split img{border-radius:12px}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.steps .n{width:44px;height:44px;border-radius:50%;background:var(--accent);color:var(--ink);font-weight:800;display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:14px}
.steps h3{font-size:17px}.steps p{font-size:15px;color:#4b5563;margin:0}
.usecase-list article{display:grid;grid-template-columns:380px 1fr;gap:36px;align-items:center;padding:28px 0;border-bottom:1px solid var(--line)}
.usecase-list article:last-child{border:0}
.usecase-list img{border-radius:12px;aspect-ratio:3/2;object-fit:cover}
.usecase-list h2{font-size:24px;margin-bottom:10px}.usecase-list p{margin:0;color:#374151}
.langs{list-style:none;padding:0;margin:28px 0;display:grid;grid-template-columns:repeat(4,1fr);gap:10px 24px}
.langs li{padding:10px 14px;background:var(--alt);border-radius:8px;font-weight:500}
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.tier{border:1px solid var(--line);border-radius:14px;padding:30px;display:flex;flex-direction:column}
.tier.featured{border:2px solid var(--accent);box-shadow:0 10px 30px rgba(45,212,191,.15)}
.tier .price{font-size:34px;font-weight:800;color:var(--ink);margin:6px 0 12px;letter-spacing:-.02em}
.tier .price span{display:block;font-size:14px;font-weight:500;color:var(--muted);letter-spacing:0}
.tier ul{padding-left:18px;margin:0 0 22px;color:#4b5563;font-size:15px}.tier ul li{margin-bottom:6px}
.tier .btn{margin-top:auto;text-align:center}
.faq details{border-bottom:1px solid var(--line);padding:16px 0}
.faq summary{cursor:pointer;font-weight:700;font-size:18px;color:var(--ink);list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::after{content:"+";color:var(--accent-dark);font-size:24px;line-height:1}
.faq details[open] summary::after{content:"\\2013"}
.faq p{margin:12px 0 0;color:#374151;max-width:820px}
.form{display:grid;gap:14px;max-width:560px}
.form label{display:grid;gap:6px;font-weight:600;font-size:14px;color:var(--ink)}
.form input,.form textarea{font:inherit;padding:11px 12px;border:1px solid #cbd5e1;border-radius:8px;width:100%}
.form input:focus,.form textarea:focus{outline:2px solid var(--accent);border-color:var(--accent)}
.legal h2{font-size:20px;margin-top:1.6em}.legal{max-width:820px}

/* cta + footer */
.cta{background:linear-gradient(135deg,#0f766e,#14b8a6);color:#fff}
.cta .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-top:44px;padding-bottom:44px;flex-wrap:wrap}
.cta h2{color:#fff;margin:0 0 6px}.cta p{margin:0;color:#e6fffa;max-width:620px}
footer{background:var(--ink);color:#b6c2d1;font-size:14px}
footer .wrap{padding-top:48px;padding-bottom:28px}
.fcols{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:28px}
footer ul{list-style:none;padding:0;margin:0}footer li{padding:4px 0}
footer a{color:#dbe4ee}footer .brand{font-size:18px}
footer .copy{margin-top:32px;padding-top:16px;border-top:1px solid rgba(255,255,255,.12);color:#8a9bb0}

@media (max-width:960px){
  .hero-grid,.split{grid-template-columns:1fr}
  .cards,.tiers{grid-template-columns:1fr 1fr}
  .usecases{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr}
  .usecase-list article{grid-template-columns:1fr}
  .langs{grid-template-columns:1fr 1fr 1fr}
  .fcols{grid-template-columns:1fr 1fr}
  .top .btn.small{display:none}
}
@media (max-width:720px){
  body{font-size:16px}
  .hero{padding:48px 0 40px}
  .cards,.tiers,.usecases,.steps,.langs{grid-template-columns:1fr}
  .toggle{display:block}
  .top nav{display:none;position:absolute;left:0;right:0;top:68px;background:var(--ink);padding:8px 20px 16px;border-bottom:1px solid rgba(255,255,255,.1)}
  .top.open nav{display:block}
  .top ul{flex-direction:column}
  .fcols{grid-template-columns:1fr}
  .cta .wrap{flex-direction:column;align-items:flex-start}
}