:root {
  --bg: #0b0f1a;
  --bg-alt: #0f1424;
  --surface: #141a2e;
  --border: #232b45;
  --text: #e8ecf5;
  --muted: #9aa4bf;
  --primary: #7c5cff;
  --accent: #22d3ee;
  --grad: linear-gradient(135deg, var(--primary), var(--accent));
  --radius: 16px;
  --max: 1160px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { line-height: 1.15; margin: 0 0 .6em; letter-spacing: -.02em; }
h1 { font-size: clamp(2.2rem, 5.5vw, 4rem); font-weight: 800; }
h2 { font-size: clamp(1.7rem, 3.5vw, 2.6rem); font-weight: 700; }
h3 { font-size: 1.15rem; font-weight: 600; }
p { margin: 0 0 1em; color: var(--muted); }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 800px; }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.eyebrow { text-transform: uppercase; letter-spacing: .14em; font-size: .78rem; font-weight: 600; color: var(--accent); margin-bottom: 1rem; }

.skip { position: absolute; left: -999px; top: 8px; background: var(--primary); color: #fff; padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: .85rem 1.5rem; border-radius: 999px; border: 0; cursor: pointer;
  background: var(--grad); color: #fff; font: inherit; font-weight: 600;
  box-shadow: 0 8px 30px -10px rgba(124, 92, 255, .7);
  transition: transform .2s, box-shadow .2s;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 12px 36px -10px rgba(34, 211, 238, .7); }
.btn-ghost { background: transparent; border: 1px solid var(--border); box-shadow: none; }
.btn-ghost:hover { border-color: var(--accent); box-shadow: none; }
.btn-sm { padding: .55rem 1.1rem; font-size: .92rem; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* Nav */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  transition: background .3s, border-color .3s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled { background: rgba(11, 15, 26, .82); backdrop-filter: blur(12px); border-color: var(--border); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: flex; align-items: center; gap: .6rem; font-weight: 800; font-size: 1.3rem; letter-spacing: -.03em; }
.logo svg { width: 32px; height: 32px; }
.menu { display: flex; align-items: center; gap: 1.8rem; list-style: none; margin: 0; padding: 0; }
.menu a:not(.btn) { color: var(--muted); font-weight: 500; font-size: .95rem; transition: color .2s; }
.menu a:not(.btn):hover { color: var(--text); }
.menu-btn { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.menu-btn span { display: block; width: 22px; height: 2px; background: var(--text); margin: 5px 0; transition: transform .3s, opacity .3s; }

/* Hero */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; overflow: hidden; padding: 120px 0 80px; }
.hero-bg { position: absolute; inset: 0; }
.hero-bg::before {
  content: ""; position: absolute; inset: -20%;
  background:
    radial-gradient(40% 40% at 20% 30%, rgba(124, 92, 255, .28), transparent 70%),
    radial-gradient(35% 35% at 80% 60%, rgba(34, 211, 238, .2), transparent 70%);
}
.hero-bg::after { content: ""; position: absolute; inset: auto 0 0 0; height: 200px; background: linear-gradient(transparent, var(--bg)); }
#net { position: absolute; inset: 0; width: 100%; height: 100%; opacity: .55; }
.hero-inner { position: relative; max-width: 900px; margin-left: auto; margin-right: auto; text-align: center; }
.lead { font-size: clamp(1.05rem, 1.6vw, 1.25rem); max-width: 680px; margin: 0 auto 2rem; }
.hero-cta { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.hero-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: .6rem; list-style: none; padding: 0; margin: 2.5rem 0 0; }
.hero-tags li { padding: .35rem .9rem; border: 1px solid var(--border); border-radius: 999px; font-size: .85rem; color: var(--muted); background: rgba(20, 26, 46, .6); }

/* Sections */
.section { padding: 110px 0; }
.section.alt { background: var(--bg-alt); border-block: 1px solid var(--border); }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 3.5rem; }

.grid.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 2rem; transition: transform .3s, border-color .3s;
}
.card:hover { transform: translateY(-4px); border-color: rgba(124, 92, 255, .6); }
.card p { margin: 0; }
.icon { width: 48px; height: 48px; border-radius: 12px; background: var(--grad); display: grid; place-items: center; margin-bottom: 1.3rem; }
.icon svg { width: 24px; height: 24px; fill: #fff; }

.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.4rem; counter-reset: s; }
.step { position: relative; padding: 2rem 1.6rem; border-radius: var(--radius); border: 1px solid var(--border); background: var(--surface); }
.step p { margin: 0; }
.num { display: inline-block; font-weight: 800; font-size: 2rem; margin-bottom: .6rem; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

.split { display: grid; grid-template-columns: 1.1fr 1fr; gap: 4rem; align-items: center; }
.checks { list-style: none; padding: 0; margin: 1.5rem 0 0; display: grid; gap: .9rem; }
.checks li { position: relative; padding-left: 2rem; }
.checks li::before {
  content: ""; position: absolute; left: 0; top: .3em; width: 1.2rem; height: 1.2rem; border-radius: 50%;
  background: var(--grad) center / 100% no-repeat;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 0a12 12 0 1 0 0 24 12 12 0 0 0 0-24Zm-1.5 17-5-5 1.6-1.6 3.4 3.4 6.9-6.9L19 8.5Z'/%3E%3C/svg%3E") center / contain no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 0a12 12 0 1 0 0 24 12 12 0 0 0 0-24Zm-1.5 17-5-5 1.6-1.6 3.4 3.4 6.9-6.9L19 8.5Z'/%3E%3C/svg%3E") center / contain no-repeat;
}
.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.8rem; }
.stat strong { display: block; font-size: 1.7rem; font-weight: 800; margin-bottom: .3rem; }
.stat span { color: var(--muted); font-size: .92rem; }

/* FAQ */
.faq { display: grid; gap: .9rem; }
.faq details { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 0 1.4rem; }
.faq summary { cursor: pointer; padding: 1.2rem 0; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 1.4rem; line-height: 1; color: var(--accent); transition: transform .25s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: 0 0 1.2rem; }

/* Contact */
.contact { background: radial-gradient(60% 80% at 0% 100%, rgba(124, 92, 255, .14), transparent 70%); }
.contact-line a { font-size: 1.3rem; font-weight: 600; color: var(--text); border-bottom: 2px solid var(--primary); }
.form { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 2rem; display: grid; gap: 1rem; }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form label { display: grid; gap: .4rem; font-size: .88rem; font-weight: 500; color: var(--muted); }
.form input, .form select, .form textarea {
  font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--border);
  border-radius: 10px; padding: .75rem .9rem; width: 100%; transition: border-color .2s;
}
.form textarea { resize: vertical; }
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--primary); }
.form .invalid { border-color: #f87171; }
.form-note { margin: 0; font-size: .9rem; min-height: 1.4em; }
.form .hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.footer { border-top: 1px solid var(--border); padding: 2rem 0; font-size: .9rem; color: var(--muted); }
.footer-inner { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.footer a:hover { color: var(--text); }

/* Reveal */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* Responsive */
@media (max-width: 980px) {
  .grid.cards { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 3rem; }
}
@media (max-width: 760px) {
  .menu-btn { display: block; }
  .menu {
    position: fixed; top: 72px; left: 0; right: 0; flex-direction: column; gap: 0;
    background: rgba(11, 15, 26, .97); border-bottom: 1px solid var(--border);
    padding: 1rem 20px 1.5rem; transform: translateY(-120%); transition: transform .3s; z-index: -1;
  }
  .menu.open { transform: none; }
  .menu li { width: 100%; }
  .menu a:not(.btn) { display: block; padding: .9rem 0; border-bottom: 1px solid var(--border); }
  .menu .btn { margin-top: 1rem; width: 100%; }
  .menu-btn[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-btn[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .menu-btn[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .nav:has(.menu.open) { background: rgba(11, 15, 26, .97); }
  .section { padding: 80px 0; }
  .grid.cards, .steps, .form .row { grid-template-columns: 1fr; }
}
@media (max-width: 420px) {
  .stats { grid-template-columns: 1fr; }
}