:root {
  --bg: #0a0a0f;
  --bg-raised: #12121a;
  --bg-card: #18182a;
  --fg: #e8e8ed;
  --fg-muted: #8888a0;
  --accent: #4ade80;
  --accent-glow: rgba(74, 222, 128, 0.15);
  --accent-dim: #2d8a50;
  --danger: #f87171;
  --radius: 12px;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', 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: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  overflow: hidden;
}

.hero-inner {
  max-width: 720px;
  text-align: center;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid rgba(74, 222, 128, 0.25);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 32px;
}

.hero h1 {
  font-size: clamp(2.8rem, 7vw, 5rem);
  margin-bottom: 24px;
  color: #fff;
}

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

.hero-sub {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 560px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero-price {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.06);
  padding: 14px 28px;
  border-radius: var(--radius);
}

.price-old {
  text-decoration: line-through;
  color: var(--danger);
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.05rem;
}

.price-arrow {
  color: var(--fg-muted);
}

.price-new {
  color: var(--accent);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
}

.hero-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
  z-index: 1;
}

/* ===== PROBLEM ===== */
.problem {
  padding: 100px 24px;
  background: var(--bg-raised);
}

.problem-inner {
  max-width: 960px;
  margin: 0 auto;
}

.problem h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  text-align: center;
  margin-bottom: 56px;
  color: #fff;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.problem-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius);
  padding: 36px 28px;
}

.problem-stat {
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 12px;
}

.problem-card p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ===== HOW ===== */
.how {
  padding: 100px 24px;
}

.how-inner {
  max-width: 960px;
  margin: 0 auto;
}

.how h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  text-align: center;
  margin-bottom: 64px;
  color: #fff;
}

.how-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.how-step {
  background: var(--bg-raised);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius);
  padding: 36px 32px;
  transition: border-color 0.2s;
}

.how-step:hover {
  border-color: var(--accent-dim);
}

.step-num {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 14px;
  letter-spacing: 0.05em;
}

.how-step h3 {
  font-size: 1.35rem;
  color: #fff;
  margin-bottom: 10px;
}

.how-step p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ===== NUMBERS ===== */
.numbers {
  padding: 100px 24px;
  background: var(--bg-raised);
}

.numbers-inner {
  max-width: 960px;
  margin: 0 auto;
}

.numbers-text {
  text-align: center;
  margin-bottom: 56px;
}

.numbers-text h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  color: #fff;
  margin-bottom: 16px;
}

.numbers-text p {
  color: var(--fg-muted);
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.05rem;
}

.numbers-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.compare-col {
  border-radius: var(--radius);
  padding: 36px 32px;
}

.compare-old {
  background: rgba(248, 113, 113, 0.06);
  border: 1px solid rgba(248, 113, 113, 0.15);
}

.compare-new {
  background: var(--accent-glow);
  border: 1px solid rgba(74, 222, 128, 0.25);
}

.compare-label {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.15rem;
  margin-bottom: 20px;
}

.compare-old .compare-label { color: var(--danger); }
.compare-new .compare-label { color: var(--accent); }

.compare-col ul {
  list-style: none;
}

.compare-col li {
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  font-size: 0.95rem;
  color: var(--fg-muted);
}

.compare-col li:last-child {
  border-bottom: none;
}

.compare-new li {
  color: var(--fg);
}

/* ===== CLOSING ===== */
.closing {
  padding: 120px 24px;
  text-align: center;
}

.closing-inner {
  max-width: 680px;
  margin: 0 auto;
}

.closing h2 {
  font-size: clamp(2rem, 5vw, 3rem);
  color: #fff;
  margin-bottom: 24px;
}

.closing-sub {
  color: var(--fg-muted);
  font-size: 1.1rem;
  line-height: 1.7;
}

/* ===== FOOTER ===== */
.site-footer {
  padding: 40px 24px;
  border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: #fff;
}

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

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

  .how-grid {
    grid-template-columns: 1fr;
  }

  .numbers-compare {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .hero-price {
    flex-direction: column;
    gap: 8px;
  }

  .price-arrow {
    transform: rotate(90deg);
  }
}