:root {
  /* BioPNL Design System - Noir Aesthetic */
  --ink-950: 5 7 13;
  --ink-900: 7 11 20;
  --ink-850: 10 16 32;
  --ink-800: 14 22 48;
  --ink-700: 20 31 61;

  /* Text Tokens */
  --text-strong: 245 247 255;
  --text-base: 214 219 245;
  --text-muted: 166 175 214;
  --text-faint: 125 136 181;

  /* Accents */
  --accent-teal: 46 242 208;
  --accent-violet: 124 92 255;
  --accent-magenta: 255 79 216;
  --accent-gold: 247 201 72;

  /* States */
  --success: 46 242 154;
  --warning: 255 176 32;
  --danger: 255 77 77;
  --info: 69 163 255;

  /* Gradients */
  --grad-primary: linear-gradient(135deg, rgb(var(--accent-teal)), rgb(var(--accent-violet)));
  --grad-pink: linear-gradient(135deg, rgb(var(--accent-magenta)), rgb(var(--accent-violet)));
  --grad-premium: linear-gradient(135deg, rgb(var(--accent-gold)), rgb(var(--accent-magenta)));

  /* Typography */
  --font-display: 'Outfit', sans-serif;
  --font-sans: 'Montserrat', sans-serif;

  /* Layout */
  --radius-xl: 20px;
  --radius-2xl: 24px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-sans);
  background-color: rgb(var(--ink-950));
  color: rgb(var(--text-base));
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Subtle Noise Texture */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url('data:image/svg+xml,%3Csvg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg"%3E%3Cfilter id="noiseFilter"%3E%3CfeTurbulence type="fractalNoise" baseFrequency="0.65" numOctaves="3" stitchTiles="stitch"/%3E%3C/filter%3E%3Crect width="100%25" height="100%25" filter="url(%23noiseFilter)"/%3E%3C/svg%3E');
  opacity: 0.03;
  pointer-events: none;
  z-index: 1000;
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

section {
  padding: clamp(6rem, 15vw, 12rem) 0;
}

/* Typography Refinement */
h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: rgb(var(--text-strong));
}

.title-large {
  font-size: clamp(3.5rem, 8vw, 5rem);
  line-height: 1.1;
  margin-bottom: 2rem;
  letter-spacing: -0.04em;
}

.title-medium {
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.2;
  margin-bottom: 1.5rem;
  letter-spacing: -0.03em;
}

.text-elegant {
  color: rgb(var(--text-muted));
  font-size: clamp(1rem, 1.2vw, 1.125rem);
  max-width: 600px;
  font-weight: 400;
  line-height: 1.6;
}

/* Button System */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 1.5rem;
  height: 2.75rem;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.875rem;
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: none;
}

.btn-primary {
  background: var(--grad-primary);
  color: rgb(var(--ink-950));
  box-shadow: 0 4px 20px rgba(var(--accent-teal), 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(var(--accent-teal), 0.3);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: rgb(var(--text-strong));
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

/* Modern Header */
header {
  padding: 1.5rem 0;
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  transition: all 0.3s ease;
}

header.scrolled {
  background: rgba(var(--ink-950), 0.8);
  backdrop-filter: blur(12px);
  padding: 1rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: rgb(var(--text-strong));
}

/* Hero - Cinematic Layout */
.hero {
  padding-top: 12rem;
  padding-bottom: 8rem;
  text-align: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 0 auto;
}

.hero-btns {
  display: flex;
  gap: 1rem;
  margin-top: 3rem;
}

.hero-media {
  margin-top: 5rem;
  width: 100%;
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
  transition: var(--transition);
}

.hero-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(rgba(var(--ink-850), 0.4), transparent),
    url('https://images.unsplash.com/photo-1540575861501-7ce0e220caf2?q=80&w=1600&auto=format&fit=crop') center/cover;
  border: 1px solid rgba(255, 255, 255, 0.05);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.6);
}

/* Feature Grid - Minimalist */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.feature {
  padding: 3rem 2.5rem;
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.feature:hover {
  border-color: rgba(var(--accent-teal), 0.3);
  background: rgba(255, 255, 255, 0.06);
  transform: translateY(-5px);
}

.feature h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

/* Stats/Acts */
.acts {
  display: flex;
  justify-content: space-between;
  gap: 4rem;
}

.act {
  flex: 1;
}

.act-marker {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  color: rgb(var(--accent-teal));
  margin-bottom: 1.5rem;
  display: block;
  text-transform: uppercase;
}

/* Two-column Benefits */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: start;
}

.list-quiet p {
  padding: 1.25rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  color: rgb(var(--text-muted));
  font-size: 1rem;
}

/* CTA */
.cta-final {
  text-align: center;
  padding: 10rem 0;
  background: radial-gradient(circle at center, rgba(var(--accent-teal), 0.05) 0%, transparent 70%);
}

.cta-final .container {
  max-width: 700px;
}

/* Footer */
footer {
  padding: 4rem 0 3rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  background: rgb(var(--ink-950));
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-links {
  display: flex;
  gap: 2rem;
  color: rgb(var(--text-faint));
  font-size: 0.75rem;
  font-family: var(--font-sans);
  letter-spacing: 0.05em;
}

.footer-links span {
  text-transform: uppercase;
}

/* Responsive */
@media (max-width: 1024px) {

  .features,
  .acts,
  .two-col {
    grid-template-columns: 1fr;
    flex-direction: column;
    gap: 3rem;
  }
}

@media (max-width: 640px) {
  .hero-btns {
    flex-direction: column;
    align-items: stretch;
  }

  .title-large {
    font-size: 3.5rem;
  }
}