:root {
  --bg: #0a1628;
  --bg-alt: #0f1f3a;
  --fg: #e8ecf4;
  --fg-muted: #8b9dc3;
  --accent: #00e676;
  --accent-dim: rgba(0, 230, 118, 0.15);
  --accent-glow: rgba(0, 230, 118, 0.3);
  --field-green: #1b5e20;
  --field-line: rgba(255, 255, 255, 0.25);
  --card-bg: rgba(15, 31, 58, 0.7);
  --card-border: rgba(139, 157, 195, 0.15);
  --font-display: 'Outfit', sans-serif;
  --font-mono: 'Space Mono', monospace;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-display);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ========== HERO ========== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 6rem 2rem 4rem;
  position: relative;
  background: radial-gradient(ellipse at 50% 80%, rgba(0, 230, 118, 0.06) 0%, transparent 60%);
}

.hero-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 0.5rem 1.25rem;
  border-radius: 100px;
  margin-bottom: 2.5rem;
  border: 1px solid rgba(0, 230, 118, 0.2);
}

.hero h1 {
  font-size: clamp(2.5rem, 7vw, 5.5rem);
  font-weight: 800;
  line-height: 1.05;
  max-width: 800px;
  letter-spacing: -0.03em;
}

.hero h1 .accent {
  color: var(--accent);
}

.hero .lede {
  font-size: clamp(1rem, 2.2vw, 1.3rem);
  color: var(--fg-muted);
  max-width: 560px;
  margin-top: 1.5rem;
  font-weight: 300;
  line-height: 1.7;
}

/* Field Graphic */
.hero-visual {
  margin-top: 4rem;
  width: 100%;
  max-width: 500px;
}

.field-graphic {
  width: 100%;
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, #1a3a1a 0%, #0d2610 100%);
  border-radius: 16px;
  border: 2px solid rgba(0, 230, 118, 0.15);
  position: relative;
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.4), 0 0 40px rgba(0, 230, 118, 0.05);
}

.field-line {
  position: absolute;
  background: var(--field-line);
}

.field-line-1 {
  width: 1px;
  height: 100%;
  left: 50%;
  top: 0;
}

.field-line-2 {
  width: 100%;
  height: 1px;
  top: 50%;
  left: 0;
}

.field-circle {
  position: absolute;
  width: 80px;
  height: 80px;
  border: 1px solid var(--field-line);
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.player-dot {
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
  animation: pulse-dot 2s ease-in-out infinite;
}

.dot-1 { top: 25%; left: 20%; animation-delay: 0s; }
.dot-2 { top: 60%; left: 15%; animation-delay: 0.3s; }
.dot-3 { top: 40%; left: 40%; animation-delay: 0.6s; }
.dot-4 { top: 20%; left: 60%; animation-delay: 0.2s; }
.dot-5 { top: 70%; left: 55%; animation-delay: 0.8s; }
.dot-6 { top: 35%; left: 78%; animation-delay: 0.4s; }
.dot-7 { top: 65%; left: 82%; animation-delay: 0.1s; }

.sub-arrow {
  position: absolute;
  width: 40px;
  height: 2px;
  background: linear-gradient(90deg, transparent, #ffab00, transparent);
  top: 50%;
  left: 30%;
  transform: rotate(-15deg);
  animation: sub-move 3s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 0.9; }
  50% { transform: scale(1.3); opacity: 1; }
}

@keyframes sub-move {
  0%, 100% { left: 30%; opacity: 0; }
  20% { opacity: 1; }
  50% { left: 60%; opacity: 1; }
  80% { opacity: 0; }
}

/* ========== PROBLEM ========== */
.problem {
  padding: 6rem 2rem;
  background: var(--bg-alt);
}

.problem-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.problem-label,
.features-label,
.numbers-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 2.5rem;
}

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

.problem-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 2rem;
  transition: border-color 0.3s ease;
}

.problem-card:hover {
  border-color: rgba(0, 230, 118, 0.3);
}

.problem-icon {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  margin-bottom: 1.25rem;
  font-weight: 700;
}

.problem-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

.problem-card p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  font-weight: 300;
  line-height: 1.65;
}

/* ========== FEATURES ========== */
.features {
  padding: 6rem 2rem;
}

.features-inner {
  max-width: 900px;
  margin: 0 auto;
}

.features-header h2 {
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 4rem;
}

.features-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.feature-item {
  display: flex;
  gap: 2.5rem;
  align-items: flex-start;
  padding: 2.5rem 0;
  border-top: 1px solid var(--card-border);
}

.feature-item:last-child {
  border-bottom: 1px solid var(--card-border);
}

.feature-number {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  border-radius: 8px;
  margin-top: 0.25rem;
}

.feature-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.feature-content p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  font-weight: 300;
  line-height: 1.7;
  max-width: 600px;
}

/* ========== NUMBERS ========== */
.numbers {
  padding: 6rem 2rem;
  background: var(--bg-alt);
}

.numbers-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.numbers-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.number-item {
  text-align: center;
  padding: 2rem 1rem;
}

.number-big {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 900;
  color: var(--accent);
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 0.75rem;
}

.number-desc {
  color: var(--fg-muted);
  font-size: 0.9rem;
  font-weight: 300;
  line-height: 1.5;
}

/* ========== CLOSING ========== */
.closing {
  padding: 8rem 2rem;
  text-align: center;
  background: radial-gradient(ellipse at 50% 20%, rgba(0, 230, 118, 0.06) 0%, transparent 60%);
}

.closing-inner {
  max-width: 750px;
  margin: 0 auto;
}

.closing h2 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 2rem;
}

.closing h2 .accent {
  color: var(--accent);
}

.closing-text {
  color: var(--fg-muted);
  font-size: 1.1rem;
  font-weight: 300;
  line-height: 1.8;
  max-width: 600px;
  margin: 0 auto;
}

/* ========== FOOTER ========== */
.site-footer {
  padding: 3rem 2rem;
  border-top: 1px solid var(--card-border);
  text-align: center;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.footer-brand {
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.01em;
  margin-bottom: 0.5rem;
}

.footer-tagline {
  color: var(--fg-muted);
  font-size: 0.85rem;
  font-weight: 300;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  .problem-grid {
    grid-template-columns: 1fr;
  }

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

  .feature-item {
    flex-direction: column;
    gap: 1rem;
  }

  .hero {
    padding: 4rem 1.5rem 3rem;
  }

  .problem,
  .features,
  .numbers,
  .closing {
    padding: 4rem 1.5rem;
  }

  .field-graphic {
    border-radius: 12px;
  }
}

@media (max-width: 480px) {
  .numbers-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .number-item {
    padding: 1.5rem;
  }
}