:root {
  --bg: #0a0a0a;
  --bg-elevated: #141414;
  --bg-card: #1a1a1a;
  --fg: #f0f0f0;
  --fg-muted: #8a8a8a;
  --fg-dim: #5a5a5a;
  --accent: #c8ff00;
  --accent-dim: rgba(200, 255, 0, 0.12);
  --accent-glow: rgba(200, 255, 0, 0.25);
  --border: #2a2a2a;
  --radius: 12px;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ---- HERO ---- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 120px 24px 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  opacity: 0.4;
}

.hero-inner {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 32px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 28px;
}

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

.hero-sub {
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  color: var(--fg-muted);
  max-width: 600px;
  line-height: 1.7;
}

/* ---- PROBLEM SECTION ---- */
.problem {
  padding: 120px 24px;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.problem-inner {
  max-width: 1000px;
  margin: 0 auto;
}

.problem-label {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--fg-dim);
  margin-bottom: 20px;
}

.problem h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 48px;
  max-width: 750px;
}

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

.problem-card {
  background: var(--bg-card);
  padding: 36px 28px;
  border-radius: 0;
}

.problem-card:first-child {
  border-radius: var(--radius) 0 0 var(--radius);
}

.problem-card:last-child {
  border-radius: 0 var(--radius) var(--radius) 0;
}

.problem-card .num {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 12px;
}

.problem-card .label {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 8px;
}

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

/* ---- HOW IT WORKS ---- */
.how {
  padding: 120px 24px;
}

.how-inner {
  max-width: 1000px;
  margin: 0 auto;
}

.how-label {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--fg-dim);
  margin-bottom: 20px;
}

.how h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 64px;
  max-width: 650px;
}

.how-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.how-step {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 32px;
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
}

.how-step:last-child {
  border-bottom: none;
}

.step-num {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 700;
  color: var(--accent-dim);
  line-height: 1;
  -webkit-text-stroke: 1px var(--accent);
  color: transparent;
}

.step-content h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--fg);
}

.step-content p {
  color: var(--fg-muted);
  font-size: 1rem;
  line-height: 1.6;
  max-width: 550px;
}

/* ---- NUMBERS ---- */
.numbers {
  padding: 100px 24px;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  text-align: center;
}

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

.numbers-label {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--fg-dim);
  margin-bottom: 48px;
}

.numbers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
}

.number-item .big {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 8px;
}

.number-item .caption {
  font-size: 0.95rem;
  color: var(--fg-muted);
}

/* ---- CLOSING ---- */
.closing {
  padding: 140px 24px;
  text-align: center;
}

.closing-inner {
  max-width: 700px;
  margin: 0 auto;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

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

.closing p {
  font-size: 1.15rem;
  color: var(--fg-muted);
  line-height: 1.7;
  max-width: 550px;
  margin: 0 auto;
}

/* ---- FOOTER ---- */
footer {
  padding: 40px 24px;
  border-top: 1px solid var(--border);
  text-align: center;
}

footer p {
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--fg-dim);
  letter-spacing: 0.5px;
}

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
  .problem-grid {
    grid-template-columns: 1fr;
    gap: 2px;
  }
  .problem-card:first-child {
    border-radius: var(--radius) var(--radius) 0 0;
  }
  .problem-card:last-child {
    border-radius: 0 0 var(--radius) var(--radius);
  }
  .how-step {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .step-num {
    font-size: 2.5rem;
  }
  .numbers-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .hero {
    padding: 80px 20px 60px;
    min-height: auto;
  }
}