:root{
  --bg:#050505; --fg:#f5f5f5; --muted:#9ca3af; --card:#0c0c0c;
  --border:#1f2937; --primary:#00e5ff; --primary-fg:#001014;
  --glow:0 0 24px rgba(0,229,255,.35);
  --glow-lg:0 0 40px rgba(0,229,255,.55);
  --radius:16px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  background:var(--bg);color:var(--fg);line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:1100px;margin:0 auto;padding:0 20px}
.muted{color:var(--muted)}
.primary{color:var(--primary)}
.glow{text-shadow:var(--glow)}

/* Header */
.header{position:sticky;top:0;z-index:50;background:rgba(5,5,5,.85);backdrop-filter:blur(10px);border-bottom:1px solid rgba(31,41,55,.6)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px;max-width:1100px;margin:0 auto;padding:0 20px}
.brand{font-weight:800;font-size:1.05rem;letter-spacing:.02em}
.nav{display:none;align-items:center;gap:28px}
.nav a{font-size:.9rem;color:var(--muted);transition:color .2s}
.nav a:hover,.nav a.active{color:var(--primary);text-shadow:var(--glow)}
.btn-wa{display:inline-flex;align-items:center;gap:8px;border:2px solid var(--primary);color:var(--primary);padding:8px 18px;border-radius:999px;font-size:.78rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;transition:all .2s}
.btn-wa:hover{background:var(--primary);color:var(--primary-fg);box-shadow:var(--glow)}
.menu-btn{background:none;border:none;color:var(--fg);cursor:pointer;padding:8px;display:flex}
.mobile-nav{display:none;border-top:1px solid rgba(31,41,55,.6);background:rgba(5,5,5,.95);padding:16px 20px;flex-direction:column;gap:4px}
.mobile-nav.open{display:flex}
.mobile-nav a{padding:10px 12px;border-radius:8px;color:var(--muted)}
.mobile-nav a:hover,.mobile-nav a.active{background:#111;color:var(--fg)}
.mobile-nav .btn-wa{margin-top:8px;justify-content:center;padding:12px}
@media(min-width:768px){.nav{display:flex}.menu-btn{display:none}}

/* Buttons */
.btn-cta{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--primary);color:var(--primary-fg);padding:14px 32px;border-radius:999px;font-size:.85rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;border:2px solid var(--primary);transition:all .25s;box-shadow:var(--glow);cursor:pointer}
.btn-cta:hover{transform:translateY(-2px);box-shadow:var(--glow-lg)}
.btn-outline{display:inline-flex;align-items:center;gap:8px;border:2px solid var(--primary);color:var(--primary);padding:10px 24px;border-radius:999px;font-weight:700;font-size:.85rem;text-transform:uppercase;letter-spacing:.06em;transition:all .2s}
.btn-outline:hover{background:var(--primary);color:var(--primary-fg)}

/* Sections */
section{padding:64px 20px}
.section-card{background:rgba(12,12,12,.5);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
h1{font-size:2.4rem;font-weight:800;line-height:1.15}
h2{font-size:1.9rem;font-weight:800;line-height:1.2;margin-bottom:.5rem}
h3{font-size:1.2rem;font-weight:700}
@media(min-width:768px){h1{font-size:3.4rem}h2{font-size:2.3rem}}

/* Hero */
.hero{min-height:calc(100vh - 64px);display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;background:radial-gradient(ellipse at top,rgba(0,229,255,.08),transparent 60%),var(--bg)}
.hero h1{max-width:760px;margin:0 auto}
.hero p{max-width:560px;margin:24px auto 0;color:var(--muted);font-size:1.05rem}

/* Grid */
.grid{display:grid;gap:24px}
.grid-3{grid-template-columns:1fr}
@media(min-width:768px){.grid-3{grid-template-columns:repeat(3,1fr)}}
.grid-2{grid-template-columns:1fr}
@media(min-width:768px){.grid-2{grid-template-columns:1fr 1fr}}
.grid-4{grid-template-columns:1fr}
@media(min-width:640px){.grid-4{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.grid-4{grid-template-columns:repeat(4,1fr)}}

/* Card */
.card{background:var(--card);border:1px solid var(--border);border-radius:24px;padding:32px;transition:all .3s}
.card:hover{transform:translateY(-4px);border-color:rgba(0,229,255,.6);box-shadow:var(--glow)}
.icon-box{display:inline-flex;padding:12px;border:1px solid rgba(0,229,255,.4);border-radius:16px;color:var(--primary);background:var(--bg);margin-bottom:16px}
.icon-box svg{width:28px;height:28px}
.card h3{margin-bottom:10px}
.card p{color:var(--muted);font-size:.95rem}
.card ul{list-style:none;margin-top:20px;display:flex;flex-direction:column;gap:10px}
.card ul li{display:flex;gap:8px;font-size:.9rem;align-items:flex-start}
.card ul li::before{content:"✓";color:var(--primary);font-weight:bold;flex-shrink:0}

/* Benefit row */
.benefits{display:grid;gap:24px;grid-template-columns:1fr;max-width:900px;margin:0 auto}
@media(min-width:768px){.benefits{grid-template-columns:repeat(3,1fr)}}
.benefit{display:flex;gap:14px;align-items:flex-start}
.benefit .icon-box{margin-bottom:0;padding:10px}
.benefit h3{font-size:1rem;margin-bottom:2px}
.benefit p{font-size:.85rem;color:var(--muted)}

/* Tags */
.tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag{padding:8px 16px;border:1px solid rgba(0,229,255,.4);background:rgba(0,229,255,.08);color:var(--primary);border-radius:999px;font-size:.85rem;font-weight:500}

/* FAQ Accordion */
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:16px;margin-bottom:12px;overflow:hidden}
.faq-item summary{padding:18px 20px;cursor:pointer;font-weight:600;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";color:var(--primary);font-size:1.5rem;transition:transform .2s;flex-shrink:0}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .answer{padding:0 20px 20px;color:var(--muted)}

/* Forms */
.form{background:var(--card);border:1px solid var(--border);border-radius:24px;padding:28px}
.form label{display:block;font-size:.85rem;font-weight:500;margin-bottom:6px}
.form input,.form textarea{width:100%;background:var(--bg);border:1px solid var(--border);color:var(--fg);padding:12px 16px;border-radius:12px;font-family:inherit;font-size:.95rem;outline:none;transition:border-color .2s}
.form input:focus,.form textarea:focus{border-color:var(--primary)}
.form .field{margin-bottom:16px}
.form button{width:100%;margin-top:8px}

.contact-info{display:flex;flex-direction:column;gap:16px}
.contact-info a,.contact-info .static{display:flex;gap:16px;align-items:flex-start;background:var(--card);border:1px solid var(--border);border-radius:24px;padding:20px;transition:all .2s}
.contact-info a:hover{border-color:rgba(0,229,255,.6);box-shadow:var(--glow)}
.contact-info svg{width:24px;height:24px;color:var(--primary);flex-shrink:0;margin-top:2px}
.contact-info .title{font-weight:700;font-size:.95rem}
.contact-info .desc{color:var(--muted);font-size:.85rem;margin-top:2px}

/* Testimonials */
.quote{background:var(--card);border:1px solid var(--border);border-radius:24px;padding:24px}
.quote blockquote{font-size:.92rem;line-height:1.6}
.quote figcaption{margin-top:20px;padding-top:16px;border-top:1px solid var(--border)}
.quote .name{font-weight:600;font-size:.9rem}
.quote .role{font-size:.78rem;color:var(--muted);margin-top:2px}

/* Footer */
.footer{border-top:1px solid var(--border);padding:32px 20px;text-align:center;color:var(--muted);font-size:.85rem}
.center{text-align:center}
.mt{margin-top:32px}
.about-prose p{margin-bottom:18px;color:var(--muted);font-size:1.05rem}
.about-prose strong{color:var(--fg)}

/* Language switcher */
.lang-switch{display:flex;align-items:center;margin-left:8px}
.lang-switch select{background:#0c0c0c;color:var(--fg);border:1px solid var(--border);border-radius:999px;padding:6px 10px;font-family:inherit;font-size:.8rem;font-weight:600;cursor:pointer;outline:none;transition:border-color .2s}
.lang-switch select:hover,.lang-switch select:focus{border-color:var(--primary)}
.lang-switch select option{background:#0c0c0c;color:var(--fg)}
@media(max-width:767px){.lang-switch{margin-left:6px}.lang-switch select{padding:5px 8px;font-size:.75rem}}