:root {
  color: #f5f7fb;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
  background: #07090e;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(900px 600px at 50% -12%, rgba(72, 139, 255, 0.19), transparent 68%),
    radial-gradient(700px 500px at 110% 45%, rgba(85, 204, 255, 0.08), transparent 65%),
    #07090e;
}
button, input { font: inherit; }
a { color: inherit; text-decoration: none; }

.nav {
  position: relative;
  z-index: 5;
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 25px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.27em;
}
nav { display: flex; align-items: center; gap: 24px; }
.nav-link {
  color: rgba(245, 247, 251, 0.6);
  font-size: 14px;
  transition: color 0.2s ease;
}
.nav-link:hover, .nav-link.active { color: #fff; }
.nav-action {
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  border-radius: 999px;
  padding: 8px 15px;
  cursor: pointer;
}

main { overflow: hidden; }
.hero, .intro, .capabilities, .closing, .setup-page {
  width: min(1060px, calc(100% - 40px));
  margin: 0 auto;
}
.hero {
  position: relative;
  min-height: 690px;
  padding: 125px 0 80px;
  text-align: center;
}
.hero-glow {
  position: absolute;
  left: 50%;
  top: 34px;
  width: 560px;
  height: 560px;
  transform: translateX(-50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(75, 151, 255, 0.15), transparent 67%);
  filter: blur(12px);
  pointer-events: none;
}
.eyebrow, .section-label, .modal-kicker {
  margin: 0 0 18px;
  color: #86b8ff;
  font-size: 12px;
  font-weight: 650;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}
.hero h1 {
  position: relative;
  max-width: 790px;
  margin: 0 auto;
  font-size: clamp(45px, 7vw, 78px);
  font-weight: 610;
  letter-spacing: -0.045em;
  line-height: 1.04;
}
.hero-copy {
  position: relative;
  max-width: 660px;
  margin: 27px auto 0;
  color: rgba(235, 240, 250, 0.63);
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.65;
}
.hero-actions {
  position: relative;
  margin-top: 36px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
}
.primary, .secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border-radius: 14px;
  padding: 0 20px;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease;
}
.primary {
  border: 1px solid rgba(190, 220, 255, 0.45);
  background: linear-gradient(145deg, #8ac0ff, #4b86e8);
  color: #06101f;
  font-weight: 700;
  box-shadow: 0 14px 40px rgba(54, 119, 230, 0.27);
}
.primary:hover, .secondary:hover { transform: translateY(-1px); }
.primary:disabled { opacity: 0.58; cursor: wait; transform: none; }
.secondary {
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.055);
  color: rgba(255, 255, 255, 0.82);
}
.orb {
  position: relative;
  width: 170px;
  height: 170px;
  margin: 76px auto 0;
}
.orb span {
  position: absolute;
  inset: 12px;
  border-radius: 44% 56% 53% 47%;
  border: 1px solid rgba(137, 193, 255, 0.65);
  box-shadow: 0 0 35px rgba(74, 150, 255, 0.22), inset 0 0 35px rgba(74, 150, 255, 0.08);
  animation: orbit 9s linear infinite;
}
.orb span:nth-child(2) { inset: 28px; animation-direction: reverse; animation-duration: 7s; }
.orb span:nth-child(3) { inset: 49px; animation-duration: 5s; background: rgba(112, 176, 255, 0.1); }
@keyframes orbit { to { transform: rotate(360deg); } }

.intro {
  padding: 100px 0 76px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.intro h2, .closing h2, .setup-page h1 {
  max-width: 740px;
  margin: 0;
  font-size: clamp(34px, 5vw, 55px);
  line-height: 1.12;
  letter-spacing: -0.035em;
  font-weight: 600;
}
.intro > p:last-child {
  max-width: 760px;
  margin: 28px 0 0;
  color: rgba(235, 240, 250, 0.62);
  font-size: 19px;
  line-height: 1.7;
}
.capabilities {
  padding: 40px 0 120px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.capabilities article, .setup-card {
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 22px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.065), rgba(255, 255, 255, 0.025));
  padding: 30px;
}
.feature-icon {
  color: rgba(133, 187, 255, 0.72);
  font-size: 12px;
  letter-spacing: 0.14em;
}
.capabilities h3 { margin: 40px 0 10px; font-size: 21px; }
.capabilities p, .setup-card p, .setup-card li {
  color: rgba(235, 240, 250, 0.59);
  line-height: 1.65;
}
.closing {
  margin-bottom: 80px;
  padding: 90px 20px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 28px;
  background: radial-gradient(circle at 50% 120%, rgba(73, 144, 255, 0.18), transparent 55%), rgba(255, 255, 255, 0.03);
  text-align: center;
}
.closing h2 { margin: 0 auto 28px; }
footer {
  width: min(1060px, calc(100% - 40px));
  margin: 0 auto;
  padding: 28px 0 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  display: flex;
  justify-content: space-between;
  color: rgba(255, 255, 255, 0.45);
  font-size: 13px;
}

.setup-page { padding: 90px 0 120px; }
.setup-lead {
  max-width: 670px;
  color: rgba(235, 240, 250, 0.63);
  font-size: 19px;
  line-height: 1.65;
}
.setup-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 55px;
}
.setup-card h2 { margin: 0 0 20px; font-size: 21px; }
.setup-card ol { margin: 0; padding-left: 20px; }
.setup-card li + li { margin-top: 12px; }
.setup-note {
  margin-top: 16px;
  padding: 15px 17px;
  border-left: 2px solid #73aaff;
  background: rgba(76, 134, 228, 0.08);
  color: rgba(235, 240, 250, 0.7);
  line-height: 1.6;
}

.modal {
  position: fixed;
  z-index: 100;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(2, 4, 8, 0.78);
  backdrop-filter: blur(22px) saturate(125%);
  -webkit-backdrop-filter: blur(22px) saturate(125%);
}
.hidden { display: none !important; }
.sheet {
  position: relative;
  width: min(440px, 100%);
  padding: 34px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 25px;
  background:
    linear-gradient(145deg, rgba(28, 34, 47, 0.97), rgba(11, 15, 23, 0.98));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.12),
    0 28px 90px rgba(0, 0, 0, 0.62);
}
.sheet h2 { margin: 0; font-size: 29px; }
.sheet > p:not(.modal-kicker) {
  margin: 10px 0 24px;
  color: rgba(235, 240, 250, 0.6);
  line-height: 1.55;
}
.modal-close {
  position: absolute;
  top: 17px;
  right: 18px;
  border: 0;
  background: transparent;
  color: rgba(255, 255, 255, 0.55);
  font-size: 26px;
  cursor: pointer;
}
#authForm { display: grid; gap: 15px; }
label {
  display: grid;
  gap: 7px;
  color: rgba(235, 240, 250, 0.68);
  font-size: 13px;
}
input {
  width: 100%;
  padding: 12px 13px;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 12px;
  outline: none;
  background: rgba(0, 0, 0, 0.36);
  color: #fff;
}
input:focus { border-color: rgba(123, 180, 255, 0.65); }
.full { width: 100%; margin-top: 2px; }
.auth-links {
  min-height: 20px;
  margin-top: 18px;
  display: flex;
  justify-content: center;
  gap: 17px;
  flex-wrap: wrap;
}
.auth-link {
  border: 0;
  padding: 0;
  background: transparent;
  color: rgba(220, 230, 245, 0.62);
  font-size: 12px;
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
}
.auth-link:hover { color: #fff; }
.error, .info { margin: 0; font-size: 12px; line-height: 1.45; }
.error { color: #ffaaa8; }
.info { color: #9fd9b4; }

@media (max-width: 700px) {
  .nav { width: min(100% - 28px, 1120px); }
  nav { gap: 12px; }
  .nav-link { display: none; }
  .hero { min-height: 640px; padding-top: 95px; }
  .hero-actions { flex-direction: column; }
  .hero-actions > * { width: 100%; max-width: 310px; }
  .capabilities, .setup-grid { grid-template-columns: 1fr; }
  .intro { padding-top: 75px; }
  .sheet { padding: 29px 23px; }
}