:root{
  --bg:#ffffff; --soft:#f5f6f8; --ink:#0f1720; --muted:#5b6472;
  --accent:#e8442b; --accent2:#ff8a3d; --line:#e8eaee; --dark:#0f1720;
  --radius:18px; --max:1200px; --font-head:"Sora",Inter,system-ui,sans-serif;
  --font-body:"Inter",system-ui,"Segoe UI",Tahoma,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font-body);color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
.container{max-width:var(--max);margin:0 auto;padding:0 22px}
h1,h2,h3,h4{font-family:var(--font-head);line-height:1.15;margin:0;letter-spacing:-.02em}
a{text-decoration:none;color:inherit}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--ink);color:#fff;padding:14px 26px;border-radius:999px;font-weight:600;font-size:.95rem;border:none;cursor:pointer;transition:.25s}
.btn:hover{background:var(--accent);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--ink)}
.btn-outline{background:transparent;border:1.5px solid var(--line);color:var(--ink)}
.btn-outline:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
.arrow{transition:.25s}
.btn:hover .arrow{transform:translate(3px,-3px)}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo{font-family:var(--font-head);font-weight:800;font-size:1.35rem;color:var(--ink)}
.logo span{color:var(--accent)}
.nav{display:flex;gap:28px;align-items:center}
.nav a{color:var(--muted);font-size:.92rem;font-weight:500;position:relative}
.nav a:hover{color:var(--ink)}
.nav a::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--accent);transition:.25s}
.nav a:hover::after{width:100%}
.nav .btn{border-radius:999px;padding:10px 20px;color:#fff}
.nav .btn::after{display:none}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:10px;padding:8px 12px;font-size:1.2rem;cursor:pointer;color:var(--ink)}

/* ---------- hero ---------- */
.hero{background:var(--soft);position:relative;overflow:hidden;padding:70px 0 0}
.hero:before{content:"";position:absolute;width:600px;height:600px;border-radius:50%;background:radial-gradient(circle,rgba(232,68,43,.12),transparent 65%);top:-160px;right:-120px}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;position:relative}
.hero-tag{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 16px;font-size:.82rem;font-weight:600;color:var(--muted)}
.hero-tag .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(232,68,43,.15)}
.hero h1{font-size:clamp(2.3rem,6vw,4.3rem);margin:18px 0}
.hero h1 em{font-style:normal;background:linear-gradient(100deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-text p.lead{color:var(--muted);font-size:1.1rem;max-width:520px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:26px 0}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:34px;border-top:1px solid var(--line);padding-top:22px}
.hero-stats strong{display:block;font-family:var(--font-head);font-size:2rem}
.hero-stats span{color:var(--muted);font-size:.85rem}
.hero-visual{background:var(--dark);border-radius:26px;padding:36px;color:#fff;position:relative;overflow:hidden}
.hero-visual:after{content:"";position:absolute;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(255,138,61,.35),transparent 70%);bottom:-90px;right:-60px}
.hero-visual .emoji{font-size:3rem;display:block;margin-bottom:14px}
.hero-visual h3{font-size:1.6rem;margin-bottom:8px}
.hero-visual p{color:#c9d1dc}
.check-list{list-style:none;padding:0;margin:18px 0 0;position:relative;z-index:1}
.check-list li{padding-left:30px;position:relative;margin:12px 0;color:#e8edf4}
.check-list li::before{content:"→";position:absolute;left:0;color:var(--accent2);font-weight:800}
.glow-badge{position:absolute;background:#fff;border-radius:14px;box-shadow:0 14px 40px rgba(0,0,0,.18);padding:12px 16px;display:flex;align-items:center;gap:10px;font-family:var(--font-head);font-weight:700;z-index:2}
.glow-badge small{display:block;color:var(--muted);font-weight:500;font-size:.72rem}
.gb1{top:-24px;right:24px}
.gb2{bottom:-22px;left:-18px}

/* ---------- marquee ---------- */
.marquee{background:var(--ink);color:#fff;padding:16px 0;overflow:hidden;white-space:nowrap}
.marquee-track{display:inline-block;animation:scroll 30s linear infinite}
.marquee span{font-family:var(--font-head);font-size:1.1rem;font-weight:600;margin:0 30px}
.marquee .sep{color:var(--accent)}
@keyframes scroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ---------- sections ---------- */
.section{padding:92px 0}
.section.alt{background:var(--soft)}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;flex-wrap:wrap;margin-bottom:40px}
.eyebrow{display:inline-block;color:var(--accent);font-weight:700;font-size:.8rem;letter-spacing:.18em;text-transform:uppercase;margin:0 0 12px}
.sec-head h2{font-size:clamp(1.8rem,4vw,2.9rem);max-width:640px}
.sec-head p{color:var(--muted);max-width:440px;margin:0}
.viewall{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--ink)}

/* ---------- about / features ---------- */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.fcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;transition:.3s;position:relative;overflow:hidden}
.fcard:hover{transform:translateY(-6px);box-shadow:0 24px 60px rgba(15,23,32,.1);border-color:transparent}
.fcard .num{font-family:var(--font-head);font-size:2.6rem;font-weight:800;color:var(--soft);position:absolute;top:16px;right:22px;line-height:1}
.fcard .icon{font-size:2rem;display:block;margin-bottom:14px}
.fcard h3{font-size:1.25rem;margin-bottom:8px}
.fcard p{color:var(--muted);margin:0}

/* ---------- disciplines (cards) ---------- */
.grid-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.disc{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;transition:.3s;display:flex;flex-direction:column}
.disc:hover{transform:translateY(-6px);box-shadow:0 24px 60px rgba(15,23,32,.1);border-color:transparent}
.disc .tag{display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:14px;background:var(--soft);font-size:1.6rem;margin-bottom:16px}
.disc h3{font-size:1.3rem;margin-bottom:4px}
.disc small{color:var(--accent);font-weight:600;font-size:.8rem;letter-spacing:.05em;text-transform:uppercase;margin-bottom:14px;display:block}
.disc ul{margin:0 0 18px;padding-left:0;list-style:none;color:var(--muted);font-size:.95rem}
.disc ul li{padding-left:24px;position:relative;margin:9px 0}
.disc ul li::before{content:"•";position:absolute;left:0;color:var(--accent);font-weight:800}
.disc .benefit{margin-top:auto;background:var(--soft);border-radius:12px;padding:12px 14px;font-size:.9rem;color:var(--ink)}

/* ---------- tech ---------- */
.tech-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.tech{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;transition:.3s}
.tech:hover{transform:translateY(-6px);box-shadow:0 24px 60px rgba(15,23,32,.1)}
.tech .icon{font-size:2rem;display:block;margin-bottom:14px}
.tech h3{font-size:1.25rem;margin-bottom:14px}
.tech p{margin:0 0 10px;color:var(--muted);font-size:.93rem}
.tech strong{color:var(--ink)}

/* ---------- careers ---------- */
.career-list{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.career{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px 24px;display:flex;gap:16px;align-items:flex-start;transition:.3s}
.career:hover{border-color:var(--accent);transform:translateY(-3px)}
.career .ic{width:46px;height:46px;border-radius:12px;background:var(--soft);display:flex;align-items:center;justify-content:center;font-size:1.3rem;flex-shrink:0}
.career strong{display:block;font-family:var(--font-head);font-size:1.05rem;margin-bottom:2px}
.career span{color:var(--muted);font-size:.9rem}

/* ---------- tools ---------- */
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.tool{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px}
.tool h3{font-size:1.3rem;margin-bottom:6px}
.tool label{display:block;margin:14px 0;font-weight:600;font-size:.92rem;color:var(--ink)}
.tool input,.tool select,.form input,.form select,.form textarea{width:100%;margin-top:8px;padding:12px 14px;border:1px solid var(--line);border-radius:12px;font-size:.95rem;font-family:var(--font-body);background:var(--soft);color:var(--ink)}
.tool input:focus,.tool select:focus,.form input:focus,.form select:focus,.form textarea:focus{outline:2px solid var(--accent);border-color:transparent;background:#fff}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.result{background:var(--ink);color:#fff;border-radius:14px;padding:18px;margin-top:16px;font-size:.95rem}
.result span{color:var(--accent2)}
.vo2-table{font-size:.85rem;color:var(--muted);margin-top:12px}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:40px;align-items:start}
.contact-grid h2{font-size:clamp(1.8rem,4vw,2.7rem);margin-bottom:14px}
.form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;display:grid;gap:2px}

/* ---------- footer ---------- */
footer{background:var(--ink);color:#94a3b8;padding:26px 0}
.foot{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;align-items:center}
.foot a{color:#fff;font-weight:600}

/* ---------- reveal animation ---------- */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .6s ease,transform .6s ease}
.reveal.show{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media(max-width:900px){
  .hero-grid,.grid2,.contact-grid{grid-template-columns:1fr}
  .grid3,.grid-cards,.tech-grid{grid-template-columns:1fr 1fr}
  .career-list{grid-template-columns:1fr}
}
@media(max-width:600px){
  .grid3,.grid-cards,.tech-grid{grid-template-columns:1fr}
  .row2{grid-template-columns:1fr}
  .nav-toggle{display:block}
  .nav{display:none;position:absolute;top:70px;left:0;right:0;background:#fff;flex-direction:column;padding:20px;gap:18px;border-bottom:1px solid var(--line)}
  .nav.open{display:flex}
  .section{padding:60px 0}
  .hero{padding:48px 0 0}
  .hero-stats{gap:10px}
  .gb1{top:-18px;right:10px}
  .gb2{bottom:-18px;left:0}
}