:root {
  color-scheme: dark;

  --bg0: #050814;
  --bg1: #07122b;
  --primary: #7ee7ff;
  --accent: #7cffa7;
  --text: #eaf2ff;
  --muted: rgba(234, 242, 255, 0.72);

  /* Glass tokens */
  --glass-lite-blur: blur(12px) saturate(160%);
  --glass-lite-bg: rgba(255, 255, 255, 0.05);
  --glass-lite-border: 1px solid rgba(255, 255, 255, 0.14);
  --glass-lite-inset: inset 0 1px 0 rgba(255, 255, 255, 0.14);
  --glass-lite-glow: 0 0 0 1px rgba(126, 231, 255, 0.08);

  --radius: 28px;
  --gutter: clamp(20px, 5vw, 60px);
  --maxw: 1160px;

  --font-display: "Space Grotesk", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;
}

* { box-sizing: border-box; }
html, body { height: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-display);
  color: var(--text);
  background:
    radial-gradient(1200px 900px at 18% 10%, rgba(126, 231, 255, 0.15), transparent 60%),
    radial-gradient(900px 700px at 82% 24%, rgba(124, 255, 167, 0.10), transparent 60%),
    linear-gradient(180deg, var(--bg1), var(--bg0) 64%, #02040b);
  overflow-x: hidden;
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; transition: 0.3s cubic-bezier(0.2, 0.8, 0.2, 1); }

/* Background Effects */
.backdrop {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.ring {
  position: absolute;
  border-radius: 999px;
  transform: translate(-50%, -50%);
  mix-blend-mode: screen;
  opacity: 0.8;
  background:
    radial-gradient(circle at 50% 50%, transparent 55%, rgba(126, 231, 255, 0.18) 56%, rgba(126, 231, 255, 0.06) 60%, transparent 69%),
    conic-gradient(from 140deg, rgba(126, 231, 255, 0), rgba(126, 231, 255, 0.15), rgba(124, 255, 167, 0.12), rgba(126, 231, 255, 0));
  filter: blur(1px);
}

.ring--a { width: min(860px, 120vw); height: min(860px, 120vw); left: 76%; top: 20%; animation: driftA 40s linear infinite; }
.ring--b { width: min(720px, 100vw); height: min(720px, 100vw); left: 18%; top: 80%; opacity: 0.6; animation: driftB 45s linear infinite; }

@keyframes driftA { 0% { transform: translate(-50%, -50%) rotate(0deg); } 100% { transform: translate(-50%, -50%) rotate(360deg); } }
@keyframes driftB { 0% { transform: translate(-50%, -50%) rotate(15deg); } 100% { transform: translate(-50%, -50%) rotate(375deg); } }

.grain {
  position: fixed;
  inset: 0;
  z-index: 999;
  pointer-events: none;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='.35'/%3E%3C/svg%3E");
  background-size: 180px 180px;
}

/* Sticky Header */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: backdrop-filter 0.3s, background 0.3s;
}

header.scrolled {
  background: rgba(5, 8, 20, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.nav-wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1.25rem var(--gutter);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.02em;
}

.brand__tag {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  padding: 4px 8px;
  border-radius: 99px;
  background: var(--glass-lite-bg);
  border: var(--glass-lite-border);
  color: var(--primary);
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.nav-links a { opacity: 0.7; }
.nav-links a:hover, .nav-links a.active { opacity: 1; color: var(--primary); }

/* Section & Layout */
main { padding-top: 100px; }

section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(60px, 12vw, 120px) var(--gutter);
}

.hero {
  text-align: center;
  padding-top: clamp(60px, 10vw, 100px);
}

h1 { font-size: clamp(44px, 7.5vw, 84px); line-height: 1.05; letter-spacing: -0.04em; margin-bottom: 2rem; }
h2 { font-size: clamp(32px, 5vw, 48px); line-height: 1.1; letter-spacing: -0.03em; margin-bottom: 1.5rem; }
h3 { font-size: 24px; margin-bottom: 1rem; color: var(--primary); }

.lead { font-size: clamp(18px, 2.5vw, 22px); color: var(--muted); max-width: 800px; margin: 0 auto 2.5rem; }

/* Components */
.glass {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  padding: clamp(28px, 6vw, 56px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  box-shadow: 
    0 40px 80px rgba(0, 0, 0, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.glass::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: radial-gradient(1000px 400px at 50% 0%, rgba(255, 255, 255, 0.08), transparent 60%);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 18px 36px;
  border-radius: 99px;
  background: linear-gradient(135deg, var(--primary), #5ed1ff);
  color: #050814;
  font-weight: 700;
  font-size: 16px;
  border: none;
  cursor: pointer;
  box-shadow: 0 20px 40px rgba(126, 231, 255, 0.2);
  transition: 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: 0 25px 50px rgba(126, 231, 255, 0.35);
}

.button--secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: none;
}

.button--secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--primary);
}

/* Proof Bar */
.proof-bar {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 4rem;
  margin-top: 5rem;
  opacity: 0.4;
  filter: grayscale(1);
  flex-wrap: wrap;
}

.proof-bar span {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* Grids */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
}

.card {
  padding: 3rem 2.5rem;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
  display: flex;
  flex-direction: column;
}

.card:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(126, 231, 255, 0.4);
  transform: translateY(-8px);
}

.tag {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  color: var(--accent);
  letter-spacing: 0.15em;
  margin-bottom: 1rem;
  display: block;
}

/* Framework Stepper */
.stepper {
  display: flex;
  flex-direction: column;
  gap: 4rem;
  position: relative;
}

.stepper::before {
  content: "";
  position: absolute;
  left: 28px;
  top: 40px;
  bottom: 40px;
  width: 1px;
  background: linear-gradient(to bottom, var(--primary), transparent);
  opacity: 0.2;
}

.step {
  display: flex;
  gap: 3rem;
  align-items: flex-start;
  position: relative;
}

.step-num {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--bg1);
  border: 1px solid var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--primary);
  flex-shrink: 0;
  box-shadow: 0 0 20px rgba(126, 231, 255, 0.2);
  z-index: 2;
}

.step-content h3 { color: var(--text); margin-top: 0.5rem; }

/* FAQ */
.faq-grid {
  display: grid;
  gap: 1.5rem;
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
  padding: 1.5rem 2rem;
}

.faq-item h4 { margin: 0 0 0.5rem; color: var(--primary); }
.faq-item p { margin: 0; color: var(--muted); font-size: 15px; }

/* Utils */
.text-gradient {
  background: linear-gradient(90deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 700;
}

.portrait {
  width: 60%;
  display: block;
  margin-inline: auto;
  aspect-ratio: 4/5;
  object-fit: cover;
  border-radius: 28px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 30px 60px rgba(0,0,0,0.4);
}

/* Footer */
footer {
  position: relative;
  margin-top: 2rem;
  padding: 48px var(--gutter) 34px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(5, 8, 20, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

footer::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(126, 231, 255, 0.22), transparent);
}

.footer-links {
  max-width: var(--maxw);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem 1.6rem;
  justify-content: flex-start;
  align-items: center;
}

.footer-links a {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
  opacity: 0.82;
}

.footer-links a:hover {
  opacity: 1;
  color: var(--primary);
}

footer p {
  max-width: var(--maxw);
  margin: 1rem auto 0;
  font-family: var(--font-mono);
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  font-weight: 600;
  text-align: left;
}

/* Animations */
[data-animate] {
  opacity: 0;
  transform: translateY(20px);
  transition: 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}

[data-animate].visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 900px) {
  .nav-links { display: none; }
  .footer-links { gap: 0.75rem 1rem; justify-content: flex-start; }
  footer p { text-align: left; }
  .step { gap: 1.5rem; }
  .stepper::before { left: 18px; }
  .step-num { width: 40px; height: 40px; font-size: 14px; }
}