:root{--bg:#f7f9fc;--surface:#ffffff;--text:#1b2a4a;--muted:#5f6b85;--primary:#3366ff;--primary-600:#2554e6;--accent:#ff7a59;--success:#16a34a;--shadow:0 10px 25px rgba(15,23,42,0.08)}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial;background:var(--bg);color:var(--text)}

/* Top nav */
nav{display:flex;justify-content:space-between;align-items:center;padding:16px 24px;background:var(--surface);box-shadow:var(--shadow);position:sticky;top:0;z-index:10}
.brand{font-weight:800;color:var(--text);text-decoration:none}
.links{display:flex;align-items:center;gap:16px}
.links a{color:var(--muted);text-decoration:none;padding:8px 10px;border-radius:8px}
.links a:hover{color:var(--text);background:rgba(37,84,230,0.08)}

/* Language switcher */
.language-switcher{display:flex;gap:8px;margin-left:16px;align-items:center}
.lang-btn{padding:8px 16px;border-radius:6px;text-decoration:none;font-size:14px;font-weight:600;transition:all 0.2s;min-width:44px;text-align:center;display:inline-block}
.lang-btn{color:var(--muted);background:rgba(0,0,0,0.05);border:1px solid rgba(0,0,0,0.1)}
.lang-btn:hover{color:var(--text);background:rgba(37,84,230,0.08)}
.lang-btn.active{color:var(--primary);background:rgba(37,84,230,0.15);border-color:rgba(37,84,230,0.3);font-weight:700}

/* Hero */
.hero{padding:72px 24px;background:radial-gradient(1200px 600px at 70% -10%, rgba(51,102,255,.15), rgba(255,255,255,0)) ,linear-gradient(180deg, #fff 0%, #f7f9fc 100%)}
.container{max-width:1100px;margin:0 auto}
.hero-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:center}
.hero h1{font-size:56px;line-height:1.05;margin:0 0 12px}
.hero p.lead{font-size:18px;color:var(--muted);margin:0 0 20px}
.badges{display:flex;flex-wrap:wrap;gap:10px;margin:12px 0 0}
.badge{display:inline-block;border:1px solid #e6eaf2;background:var(--surface);padding:10px 14px;border-radius:999px;color:var(--primary);font-weight:600;text-decoration:none;box-shadow:var(--shadow)}
.cta{display:flex;gap:12px;margin-top:18px}
.button{display:inline-block;padding:12px 16px;border-radius:12px;border:0;background:var(--primary);color:#fff;text-decoration:none;font-weight:700;box-shadow:var(--shadow)}
.button:hover{background:var(--primary-600)}
.button.alt{background:#fff;color:var(--text);border:1px solid #e6eaf2}

.hero-illu{position:relative}
.hero-illu .card{background:var(--surface);border:1px solid #e6eaf2;border-radius:16px;box-shadow:var(--shadow);padding:16px}
.hero-illu img{width:100%;height:auto;border-radius:12px;display:block}

/* Feature cards */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
.card{background:var(--surface);border:1px solid #e6eaf2;border-radius:16px;box-shadow:var(--shadow);padding:18px}
.card h3{margin:0 0 8px}
.card p{margin:0;color:var(--muted)}

/* Showcase banners */
.banner{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:center;background:var(--surface);border:1px solid #e6eaf2;border-radius:16px;box-shadow:var(--shadow);padding:24px}
.banner .img{border-radius:12px;overflow:hidden}
.banner .img img{width:100%;height:300px;object-fit:cover;display:block;border-radius:8px}
.banner .txt h3{margin:0 0 8px}
.banner .txt p{margin:0 0 12px;color:var(--muted)}

/* Footer */
footer{padding:32px 24px;color:var(--muted);text-align:center}

/* Docs pages */
.doc{max-width:900px;margin:24px auto;padding:0 24px;background:var(--surface);border:1px solid #e6eaf2;border-radius:16px;box-shadow:var(--shadow)}

/* Responsive */
@media (max-width:900px){.hero-wrap{grid-template-columns:1fr}.hero h1{font-size:38px}}