:root{
  --bg:#0b0d14;
  --card:#111522;
  --muted:#8a94a7;
  --text:#e8edf5;
  --primary:#6c6cff;
  --primary-600:#5454ff;
  --accent:#ffb703;
  --success:#10b981;
  --contrast:#111111;
  --border:#1c2435;
  --shadow:0 10px 30px rgba(0,0,0,.35);
}

/* Light theme */
@media (prefers-color-scheme: light){
  :root{
    --bg:#f6f8fc;
    --card:#ffffff;
    --muted:#516074;
    --text:#0a0c12;
    --primary:#4f46e5;
    --primary-600:#4338ca;
    --contrast:#ffffff;
    --border:#e6eaf2;
    --shadow:0 10px 25px rgba(0,0,0,.08);
  }
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:Inter,system-ui,Segoe UI,Roboto,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
}

/* Utilities */
.container{width:min(1120px,92vw);margin-inline:auto}
.grid{display:grid;gap:24px}
.center{text-align:center}
.muted{color:var(--muted)}
.lead{font-size:1.125rem;color:var(--muted);max-width:60ch}
.accent{color:var(--accent)}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.8rem 1.1rem;border-radius:12px;border:1px solid transparent;font-weight:700;text-decoration:none;cursor:pointer;transition:transform .06s ease,filter .2s ease}
.btn:hover{transform:translateY(-1px)}
.btn.primary{background:var(--primary);color:#fff}
.btn.primary:hover{filter:brightness(1.1)}
.btn.contrast{background:var(--accent);color:#111}
.btn.outline{background:transparent;border-color:var(--border);color:var(--text)}
.btn.success{background:var(--success);color:#fff}
.ghost{background:transparent;border:1px solid var(--border);color:var(--muted);border-radius:10px;padding:.4rem .6rem}
.small{font-size:.85rem}

/* Topbar */
.topbar{background:linear-gradient(90deg, var(--primary), #00b3ff);color:#fff}
.topbar .container{display:flex;align-items:center;justify-content:space-between;padding:.4rem 0}

/* Header */
.header{position:sticky;top:0;z-index:10;background:rgba(0,0,0,.35);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;gap:16px;padding:14px 0}
.logo{font-weight:800;letter-spacing:.3px;text-decoration:none;color:var(--text);display:inline-flex;align-items:center;gap:.4rem}
.logo-mark{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,var(--primary),#00b3ff);color:#fff;font-weight:900}
.menu{display:flex;gap:18px;align-items:center}
.menu a{color:var(--muted);text-decoration:none;font-weight:600}
.menu a:hover{color:var(--text)}
.hamburger{display:none;background:transparent;border:1px solid var(--border);color:var(--text);border-radius:8px;padding:.4rem .6rem}

@media (max-width:880px){
  .menu{display:none}
  .hamburger{display:inline-block;margin-left:auto}
}

/* Hero */
.hero{padding:48px 0 24px}
.hero-grid{grid-template-columns:1.1fr .9fr;align-items:center}
.hero-points{list-style:none;margin:14px 0 0;padding:0}
.hero-points li{margin:.25rem 0;color:var(--muted)}
.card{background:var(--card);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow)}

@media (max-width:880px){
  .hero-grid{grid-template-columns:1fr}
}

/* Carousel */
.carousel{position:relative;overflow:hidden;min-height:320px}
.carousel-track{display:flex;transition:transform .5s ease-in-out}
.carousel img{width:100%;height:100%;object-fit:cover;display:block}
.carousel .carousel-btn{position:absolute;top:50%;transform:translateY(-50%);background:rgba(0,0,0,.4);border:none;color:#fff;width:38px;height:38px;border-radius:50%;cursor:pointer}
.carousel .prev{left:12px}
.carousel .next{right:12px}
.carousel-dots{position:absolute;left:0;right:0;bottom:10px;display:flex;gap:8px;justify-content:center}
.carousel-dots button{width:10px;height:10px;border-radius:50%;border:1px solid #fff;background:transparent;opacity:.6}
.carousel-dots button.active{background:#fff;opacity:1}

/* Sections */
.section{padding:64px 0}
.section.alt{background:linear-gradient(180deg,rgba(255,255,255,0.03),transparent)}
.cards-3{grid-template-columns:repeat(3,1fr)}
.feature{padding:24px;border:1px solid var(--border);border-radius:16px;background:var(--card)}
.feature .icon{font-size:28px}
.pricing{grid-template-columns:repeat(3,1fr);margin-top:22px}
.price-card{padding:24px;border:1px solid var(--border);border-radius:16px;background:var(--card);position:relative}
.price-card .badge{position:absolute;top:16px;right:16px;background:var(--accent);color:#111;font-weight:800;padding:.2rem .45rem;border-radius:10px}
.price{font-size:2.2rem;font-weight:800;margin:.3rem 0}
.price .small{font-size:.9rem;color:var(--muted);font-weight:600}
.subtitle{color:var(--muted);margin-top:-.25rem}
.list{list-style:none;padding:0;margin:14px 0 18px}
.list li{padding:6px 0;border-bottom:1px dashed var(--border)}
.disclaimer{margin-top:10px;color:var(--muted);font-size:.9rem}

/* Steps */
.steps{counter-reset:step;list-style:none;padding-left:0;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin:20px 0 0}
.steps li{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:18px}
.steps h4{margin:0 0 8px}

@media (max-width:880px){
  .cards-3{grid-template-columns:1fr}
  .pricing{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr}
}
@media (max-width:540px){
  .steps{grid-template-columns:1fr}
}

/* Accordion */
.accordion details{border:1px solid var(--border);border-radius:14px;background:var(--card);padding:10px 14px;margin:10px 0}
.accordion summary{cursor:pointer;font-weight:700;list-style:none}
.accordion .content{color:var(--muted);margin-top:8px}

/* Forms */
.form{padding:22px}
.form-grid{grid-template-columns:1fr 1fr}
.form-grid .full{grid-column:1/-1}
label{display:flex;flex-direction:column;gap:8px;font-weight:600}
input,select,textarea{padding:.8rem;border-radius:12px;border:1px solid var(--border);background:transparent;color:var(--text)}
input:focus,select:focus,textarea:focus{outline:2px solid var(--primary-600);border-color:transparent}
.checkbox{flex-direction:row;align-items:center;gap:10px}
.form .cta-row{margin-top:10px;gap:10px}

/* Footer */
.footer{border-top:1px solid var(--border);padding:26px 0;margin-top:30px}
.footer-grid{display:grid;gap:16px;grid-template-columns:1fr auto auto}
.footer .links,.footer .legal{display:flex;gap:14px;align-items:center}

@media (max-width:880px){
  .footer-grid{grid-template-columns:1fr}
}

/* Modals */
.modal{max-width:min(720px,92vw);border:none;border-radius:16px;padding:0;background:transparent}
.modal::backdrop{background:rgba(0,0,0,.5)}
.modal-content{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:20px;position:relative}
.modal .close{position:absolute;right:8px;top:8px;border:none;background:transparent;color:var(--text);font-size:20px;cursor:pointer}

/* Animations */
.marquee{overflow:hidden;border-block:1px solid var(--border);background:linear-gradient(180deg,rgba(255,255,255,0.02),transparent)}
.marquee-track{display:flex;gap:28px;white-space:nowrap;animation:marquee 22s linear infinite;padding:.5rem 0;color:var(--muted)}
@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}