@import url('https://fonts.googleapis.com/css2?family=Unbounded:wght@500;700;800&family=Manrope:wght@400;500;700&family=JetBrains+Mono:wght@500&display=swap');

:root{
  --paper:#f3f1ea;
  --ink:#0d2b3e;
  --ink-soft:#3d5a6c;
  --orange:#ff5a1f;
  --teal:#19a7b8;
  --line:rgba(13,43,62,.14);
  --radius:18px;
  --display:'Unbounded','Trebuchet MS',sans-serif;
  --body:'Manrope','Segoe UI',system-ui,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--body);color:var(--ink);background:var(--paper);line-height:1.6;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:48px 48px;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{width:min(1120px,92%);margin-inline:auto}
h1,h2,h3{font-family:var(--display);line-height:1.1;letter-spacing:-.02em}
.tag{font-family:var(--mono);font-size:.78rem;color:var(--orange);text-transform:uppercase;letter-spacing:.14em}

/* header */
header{position:sticky;top:0;z-index:50;background:rgba(243,241,234,.92);backdrop-filter:blur(8px);border-bottom:2px solid var(--ink)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--display);font-weight:800;font-size:1.1rem}
.brand img{width:36px;height:36px}
.brand span{color:var(--orange)}
nav ul{display:flex;gap:28px;list-style:none;font-weight:700;font-size:.92rem}
nav a{position:relative;padding:4px 0}
nav a::after{content:"";position:absolute;left:0;bottom:-2px;height:3px;width:0;background:var(--orange);transition:width .25s}
nav a:hover::after,nav a.active::after{width:100%}
.burger{display:none;background:none;border:2px solid var(--ink);border-radius:10px;width:44px;height:40px;font-size:1.3rem;cursor:pointer;color:var(--ink)}

.btn{display:inline-block;font-family:var(--display);font-weight:700;font-size:.85rem;padding:15px 26px;border:2px solid var(--ink);border-radius:999px;background:var(--orange);color:#fff;box-shadow:4px 4px 0 var(--ink);transition:transform .15s,box-shadow .15s;cursor:pointer}
.btn:hover{transform:translate(2px,2px);box-shadow:2px 2px 0 var(--ink)}
.btn.ghost{background:transparent;color:var(--ink)}

/* hero */
.hero{padding:70px 0 90px}
.hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.hero h1{font-size:clamp(2.2rem,5vw,3.9rem);margin:14px 0 20px}
.hero h1 em{font-style:normal;color:var(--orange);position:relative}
.hero p{color:var(--ink-soft);font-size:1.08rem;max-width:520px;margin-bottom:30px}
.hero .cta{display:flex;gap:16px;flex-wrap:wrap}
.hero-art{background:#fff;border:2px solid var(--ink);border-radius:28px;box-shadow:10px 10px 0 var(--teal);overflow:hidden;animation:float 6s ease-in-out infinite}
@keyframes float{50%{transform:translateY(-10px)}}

/* ticker */
.ticker{background:var(--ink);color:var(--paper);border-block:2px solid var(--ink);overflow:hidden;white-space:nowrap}
.ticker div{display:inline-block;padding:14px 0;font-family:var(--mono);font-size:.85rem;animation:slide 28s linear infinite}
.ticker span{margin:0 28px}
.ticker b{color:var(--orange)}
@keyframes slide{to{transform:translateX(-50%)}}

section{padding:90px 0}
.head{max-width:620px;margin-bottom:46px}
.head h2{font-size:clamp(1.7rem,3.6vw,2.6rem);margin:10px 0 14px}
.head p{color:var(--ink-soft)}

/* products */
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:30px}
.chip{font-family:var(--mono);font-size:.8rem;padding:9px 16px;border:2px solid var(--ink);border-radius:999px;background:transparent;color:var(--ink);cursor:pointer;transition:.15s}
.chip.on,.chip:hover{background:var(--ink);color:var(--paper)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:22px}
.card{background:#fff;border:2px solid var(--ink);border-radius:var(--radius);padding:22px;transition:transform .2s,box-shadow .2s}
.card:hover{transform:translate(-3px,-3px);box-shadow:7px 7px 0 var(--orange)}
.card img{width:100%;height:130px;object-fit:contain;margin-bottom:14px;background:repeating-linear-gradient(45deg,#eef3f5 0 8px,#fff 8px 16px);border-radius:12px;padding:10px}
.card h3{font-size:1.02rem;margin-bottom:6px}
.card p{font-size:.9rem;color:var(--ink-soft)}
.card .spec{font-family:var(--mono);font-size:.74rem;color:var(--teal);margin-top:10px}
.card.hide{display:none}

/* why */
.why{background:var(--ink);color:var(--paper);border-block:2px solid var(--ink)}
.why .head p{color:#b9ccd6}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:50px}
.stat{border:2px solid rgba(243,241,234,.3);border-radius:var(--radius);padding:24px}
.stat b{font-family:var(--display);font-size:2.4rem;color:var(--orange);display:block}
.stat small{color:#b9ccd6}
.feats{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feat{padding:6px 0;border-top:3px solid var(--teal)}
.feat h3{font-size:1.05rem;margin:14px 0 8px}
.feat p{color:#b9ccd6;font-size:.94rem}

/* calc */
.calc{display:grid;grid-template-columns:1fr 1fr;gap:30px;background:#fff;border:2px solid var(--ink);border-radius:28px;padding:36px;box-shadow:10px 10px 0 var(--orange)}
label{display:block;font-weight:700;font-size:.88rem;margin:14px 0 6px}
input,select,textarea{width:100%;font:inherit;padding:13px 14px;border:2px solid var(--ink);border-radius:12px;background:var(--paper);color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:3px solid var(--teal)}
.result{background:var(--paper);border:2px dashed var(--ink);border-radius:var(--radius);padding:26px;display:flex;flex-direction:column;justify-content:center}
.result b{font-family:var(--display);font-size:2.6rem;color:var(--orange)}
.result small{color:var(--ink-soft)}

/* contact */
.contact{display:grid;grid-template-columns:.8fr 1.2fr;gap:40px}
.info li{list-style:none;margin-bottom:18px;padding-left:16px;border-left:4px solid var(--orange)}
.info strong{display:block;font-family:var(--display);font-size:.9rem}
form{background:#fff;border:2px solid var(--ink);border-radius:24px;padding:30px}
form .row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
form button{margin-top:20px}
.ok{display:none;margin-top:16px;padding:14px;border-radius:12px;background:#d9f4e4;border:2px solid #1c8a4f;font-weight:700}
.err{color:#c0321a;font-size:.8rem;min-height:1em}

footer{background:var(--ink);color:#b9ccd6;padding:36px 0;font-size:.9rem}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
footer b{color:var(--paper);font-family:var(--display)}

.reveal{opacity:0;transform:translateY(26px);transition:opacity .6s,transform .6s}
.reveal.in{opacity:1;transform:none}

@media(max-width:860px){
  .hero .wrap,.calc,.contact{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr}
  .feats{grid-template-columns:1fr}
  .burger{display:block}
  nav ul{position:absolute;top:68px;left:0;right:0;flex-direction:column;gap:0;background:var(--paper);border-bottom:2px solid var(--ink);max-height:0;overflow:hidden;transition:max-height .3s}
  nav ul.open{max-height:360px}
  nav li a{display:block;padding:16px 4%}
  form .row{grid-template-columns:1fr}
}