:root {
  --bg: #05050a;
  --bg-2: #0a0b14;
  --card: rgba(16, 18, 32, 0.82);
  --text: #f4f7ff;
  --muted: #9aa3b8;
  --line: rgba(124, 92, 255, 0.28);
  --purple: #9b5cff;
  --blue: #3ecbff;
  --radius: 14px;
  --max: 1180px;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: Inter, "Segoe UI", system-ui, sans-serif;
  background:
    radial-gradient(900px 500px at 78% 28%, rgba(90, 40, 180, 0.28), transparent 55%),
    radial-gradient(700px 420px at 12% 8%, rgba(40, 90, 180, 0.18), transparent 50%),
    var(--bg);
  color: var(--text);
  line-height: 1.55;
}

a { color: inherit; text-decoration: none; }

.page {
  width: min(var(--max), calc(100% - 2rem));
  margin: 0 auto;
  padding-bottom: 2.5rem;
}

.nav {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1.25rem;
  padding: 1.1rem 0 0.8rem;
  position: sticky;
  top: 0;
  z-index: 20;
  background: linear-gradient(to bottom, rgba(5, 5, 10, 0.96) 70%, transparent);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.brand-logo {
  display: block;
  height: 58px;
  width: auto;
  max-width: min(220px, 42vw);
  object-fit: contain;
}

.nav-links {
  display: flex;
  justify-content: center;
  gap: 1.35rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: #dbe4f3;
}

.nav-links a:hover { color: #fff; }

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  padding: 0.4rem;
  cursor: pointer;
  z-index: 21;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px 0;
  background: #fff;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  border-radius: 999px;
  padding: 0.78rem 1.25rem;
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  border: 1px solid transparent;
}

.btn svg { width: 18px; height: 18px; }

.btn-ghost {
  padding: 0.55rem 1.05rem;
  border-color: #7a4dff;
  box-shadow: 0 0 0 1px rgba(122, 77, 255, 0.35), 0 0 18px rgba(122, 77, 255, 0.25);
}

.btn-primary {
  background: linear-gradient(90deg, #7a3dff 0%, #3d8bff 100%);
  color: #fff;
  box-shadow: 0 8px 28px rgba(90, 60, 255, 0.35);
}

.btn-primary:hover { filter: brightness(1.08); }

.btn-outline {
  border-color: rgba(255, 255, 255, 0.55);
  color: #fff;
}

.btn-outline:hover { border-color: #fff; }

.hero {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 1.5rem;
  align-items: center;
  min-height: calc(100vh - 96px);
  padding: 1.5rem 0 3rem;
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(2.4rem, 5vw, 4.1rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  font-weight: 800;
}

.grad {
  background: linear-gradient(90deg, #b56bff 10%, #5aa7ff 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p,
.lede {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 36rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 1.6rem;
}

.hero-art {
  position: relative;
}

.hero-art::before {
  content: "";
  position: absolute;
  inset: 8% 6%;
  background: radial-gradient(circle, rgba(120, 70, 255, 0.35), transparent 68%);
  filter: blur(18px);
  z-index: 0;
}

.hero-art img {
  position: relative;
  width: 100%;
  height: auto;
  display: block;
  filter: drop-shadow(0 20px 50px rgba(40, 20, 90, 0.45));
}

.section {
  padding: 4.2rem 0 1.2rem;
}

.kicker {
  margin: 0 0 0.55rem;
  color: var(--blue);
  letter-spacing: 0.18em;
  font-size: 0.72rem;
  font-weight: 700;
}

h2 {
  margin: 0 0 1.4rem;
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  letter-spacing: -0.03em;
}

.grid-3,
.grid-2 {
  display: grid;
  gap: 1rem;
}

.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem 1.2rem 1.3rem;
}

.card h3 { margin: 0 0 0.45rem; font-size: 1.05rem; }
.card p { margin: 0; color: var(--muted); }

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
}

.steps li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: start;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}

.steps span {
  font-weight: 800;
  color: var(--purple);
  letter-spacing: 0.08em;
}

.steps h3 { margin: 0 0 0.3rem; }
.steps p { margin: 0; color: var(--muted); }

.download {
  text-align: left;
}

.foot {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1.2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--muted);
  font-size: 0.9rem;
}

.foot nav { display: flex; gap: 1rem; }
.foot a:hover { color: #fff; }

.register-wrap h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
}

.form-card {
  max-width: 28rem;
  display: grid;
  gap: 0.85rem;
  margin-top: 1.4rem;
  padding: 1.4rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.form-card label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.form-card input {
  width: 100%;
  padding: 0.7rem 0.8rem;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: #0c0e16;
  color: var(--text);
  font: inherit;
}

.form-card input:focus {
  outline: 2px solid var(--purple);
  border-color: transparent;
}

.form-card .btn { margin-top: 0.35rem; width: 100%; }

.form-note { margin: 0; color: var(--muted); font-size: 0.9rem; font-weight: 400; }
.form-note a { color: var(--blue); }

.flash {
  max-width: 36rem;
  padding: 1rem 1.1rem;
  border-radius: var(--radius);
  margin: 1rem 0 1.2rem;
  border: 1px solid var(--line);
}
.flash p { margin: 0.4rem 0 0; color: var(--muted); }
.flash.ok { border-color: rgba(62, 203, 255, 0.45); }
.flash.err { border-color: rgba(255, 90, 90, 0.45); }
.flash.err p { color: #ffb4b4; margin: 0.2rem 0; }

.hp {
  position: absolute;
  left: -9999px;
  height: 0;
  overflow: hidden;
}

@media (max-width: 960px) {
  .nav {
    grid-template-columns: 1fr auto auto;
  }

  .nav-toggle { display: block; }

  .nav-links,
  .nav-cta {
    display: none;
  }

  .nav.is-open .nav-links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(8, 9, 16, 0.96);
    padding: 1rem;
    border-bottom: 1px solid var(--line);
  }

  .nav.is-open .nav-cta {
    display: inline-flex;
    position: absolute;
    top: 12px;
    right: 52px;
  }

  .hero,
  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .hero { min-height: 0; padding-top: 1.5rem; }
}

@media (max-width: 640px) {
  .hero-actions .btn { width: 100%; }
  .foot { flex-direction: column; }
}